When the story of Harish Rana captured the collective prayers of an entire nation, people paused, empathised, and watched the Supreme Court judgement unfold as
Life Style

When the story of Harish Rana captured the collective prayers of an entire nation, people paused, empathised, and watched the Supreme Court judgement unfold as it passed a historic decision allowing passive euthanasia for Rana, who was in a vegetative state for over 13 years

Oil prices </b>rose above $110 (£82.78) a barrel after Iranian media reported an airstrike hitting a facility on the world's largest natural gas field
Business

Oil prices rose above $110 (£82.78) a barrel after Iranian media reported an airstrike hitting a facility on the world's largest natural gas field. The Brent crude oil benchmark hit $112 a barrel in early Thursday trade in Asia, more than 5% higher than Tuesday's prices

US Vice President JD Vance and Energy Secretary Chris Wright will meet with oil industry leaders. The administration plans to announce measures to lower gas
World

US Vice President JD Vance and Energy Secretary Chris Wright will meet with oil industry leaders. The administration plans to announce measures to lower gas prices. These include releasing oil from emergency reserves and easing shipping regulations

Milk has long been a cornerstone of Indian diets, simple, familiar, and deeply rooted in tradition. But in urban India, that narrative is rapidly evolving
Life Style

Milk has long been a cornerstone of Indian diets, simple, familiar, and deeply rooted in tradition. But in urban India, that narrative is rapidly evolving. Today’s consumers are no longer satisfied with just a glass of milk; they are seeking products that align with their fast-paced lifestyles

The Karnataka High Court has granted bail to a 25-year-old woman from West Bengal who had been arrested in January for shouting “Jai Bangla” during a
World

The Karnataka High Court has granted bail to a 25-year-old woman from West Bengal who had been arrested in January for shouting “Jai Bangla” during a demolition drive in Bengaluru. On March 11, Justice S Rachaiah noted that Sarbanu Khatun was “instigated” to shout “Jai Bharath Mata Ki

Navratri is no longer just about simple fasting meals, it’s about celebrating tradition with flavour, variety, and a touch of indulgence. Across India
Life Style

Navratri is no longer just about simple fasting meals, it’s about celebrating tradition with flavour, variety, and a touch of indulgence. Across India, restaurants are reimagining vrat-friendly dining with thoughtfully curated menus that stay true to sattvik roots while elevating the overall

On March 14, the Narendra Modi government announced that it had decided to end Ladakhi climate activist Sonam Wangchuk’s detention under the National
Politics

On March 14, the Narendra Modi government announced that it had decided to end Ladakhi climate activist Sonam Wangchuk’s detention under the National Security Act – nearly six months after his arrest. The Union home ministry is not known to have made such a concession for any detainee held

India’s environment ministry notified the new solid waste management rules of 2026 on January 27, superseding the 2016 rules. The new rules signal a shift
World

India’s environment ministry notified the new solid waste management rules of 2026 on January 27, superseding the 2016 rules. The new rules signal a shift towards a more systematic compliance architecture, with a clearer outline of duties for waste generators

How a mortgage transforms your investment portfolio

Posted By: Tarun Kumar Posted On: Dec 26, 2025Share Article
How a mortgage transforms your investment portfolio
Microsoft Corp. and Amazon.com Inc. signage at the Nasdaq MarketSite in New York, US, ( Bloomberg )

How a mortgage transforms your investment portfolio

As financial decisions go, borrowing several times your annual earnings to buy a risky asset is a pretty big one. Yet for many people, taking out a mortgage to buy a house is something of a no-brainer. It generally involves less agonising than, say, how much to save for retirement, or how to split your pot between cash, stocks and bonds.

One reason is that, some short-lived slumps aside, house prices across the rich world have been buoyant since the 1950s. More important, you need to live somewhere. Until you own a place, you have a natural short position in property, because you need to inhabit one for the rest of your life (whether you rent or eventually buy). Short positions are risky (who knows how far rents and prices might rise?). Buying a home closes the position, resulting in a neutral one; unlike other investments, it is not really a bet on where prices are headed. The mortgage is an unfortunate necessity for those who lack the cash to buy outright, rather than a deliberate punt on the future path of interest rates.

Thinking about a mortgage as a component in the borrower's investment portfolio might therefore seem odd. It should not. After all, a fixed-rate mortgage looks rather like a bond, while one with a floating rate resembles the sort of corporate loan often extended by banks and private-credit funds. In other words, the mortgage-laden investor has not only closed their natural short exposure to property. They have also opened a new short position in an asset similar to those that, elsewhere, they may hold long positions in. In many cases—think of most first-time buyers—it will be the investor's biggest position by far, offsetting any opposing ones and then some. Taking out a mortgage can transform your portfolio.

Fixed-rate mortgages can alter a portfolio's value the most. Borrowers are accustomed to seeing just the outstanding balance, which climbs as interest accrues and declines with repayments. But the mortgage's true value changes in the same way as that of a bond: it rises when market interest rates fall (meaning the borrower loses out) and vice versa.

This seems counterintuitive when the interest and repayments are fixed. It happens because, though future repayments stay constant when interest rates change, their value in the present does not—which illustrates a concept known as the “time value” of money. The promise of $1 in a year's time is worth less than $1 today, since today the dollar can be deposited in a bank account and earn a year's interest. Conversely, if interest rates fall, a commitment to pay a series of fixed sums in the future, as in a fixed-rate mortgage, becomes a bigger liability today. This is also why the market prices of bonds rise when interest rates fall.

By similar reasoning, though a floating-rate mortgage carries the risk of rising repayments, these do not change the portfolio's value. If interest rates climb, future repayments climb with them. At the same time, the present value of each future dollar falls by the same amount. The trade-off is that the investor must find the cash to meet higher repayments—perhaps by eating into returns from the rest of the portfolio.

Where does this leave the borrower's broader portfolio? The short position created by a fixed-rate mortgage can dramatically change an investor's overall exposure. If their savings follow the classic 60/40 split between stocks and bonds, for instance, but they have a fixed-rate mortgage worth 20% of their savings, their “true” allocation is more like 60/20. This effect is reduced by quirks of individual markets, such as America's and Denmark's, which generally allow borrowers to repay mortgages early without a penalty if rates have moved against them (since this makes their debt less bond-like).

For investors whose mortgages are large compared with their savings—think again of first-time buyers—the effect is far greater. If the short position created by a fixed-rate mortgage is bigger than the value of your savings, for instance, you cannot have a net positive exposure to bonds, however many you buy. Instead, your portfolio will look rather like those of the more daring hedge funds: leveraged to the hilt on one side, and long stocks and their outsize returns on the other. This is a cheery way of looking at things. Unlike the hedge fund, a stockmarket crash will not make you bust, since the debt is secured against your house, not your shares. Perhaps being saddled with a mortgage is not so bad, after all.

Subscribers to The Economist can sign up to our Opinion newsletter, which brings together the best of our leaders, columns, guest essays and reader correspondence.

Comment on Post

Leave a comment

If you have a News Orbit 360 user account, your address will be used to display your profile picture.


The sun shone brightly across Liverpool on Wednesday and, come the evening, Liverpool delivered one of their performances of the season
Sports
Slot needed a performance - and Liverpool delivered one

The sun shone brightly across Liverpool on Wednesday and, come the evening, Liverpool delivered one of their performances of the season. "It was almost the perfect game for us, but definitely our fans," said Arne Slot, after his side secured a first Champions League quarter-final since 2022 with a

1 hours ago

<h4 class=
Latest News
SC says 1947 Act repeal no bar to defining ‘industry’

SC says 1947 Act repeal no bar to defining ‘industry’The Supreme Court ruled that the repeal of the Industrial Disputes Act won't change how "industry" is defined, impacting ongoing disputes in courts. Published on: Mar 19, 2026 7:46 AM IST By Abraham Thomas

1 hours ago

China has long braced for a Gulf oil supply shock - but the Iran war's disruption of a key global shipping route is now putting its resilience to the test
World
The Iran war is causing a global energy crisis - can China withstand it

China has long braced for a Gulf oil supply shock - but the Iran war's disruption of a key global shipping route is now putting its resilience to the test. Energy shipments from the Middle East have been at a standstill following Iran's threats to attack vessels that pass through a critical trade

1 hours ago

The Income-tax Act, 2025 will come into force, replacing the Income-tax Act, 1961 that has been in place for over 60 years. Instead of tinkering with tax rates
Latest News
Income tax rules set for overhaul from April 1

The Income-tax Act, 2025 will come into force, replacing the Income-tax Act, 1961 that has been in place for over 60 years. Instead of tinkering with tax rates, the government has focused on rewriting the law in a clearer, more structured manner. Over time

1 hours ago

The Donald Trump-led US administration has taken the rare step of preparing a temporary waiver for the Merchant Marine Act of 1920
World
Trump's 'Jones Act' Gamble

The Donald Trump-led US administration has taken the rare step of preparing a temporary waiver for the Merchant Marine Act of 1920, commonly known as the Jones Act. This move comes as the United States grapples with a historic surge in fuel prices triggered by the escalating conflict between the US

1 hours ago

Players from the Iran women’s national football team have reportedly returned home after a dramatic and politically charged episode during the AFC Women’s
Sports
Iran Women’s Football Team Return Home After Australia Asylum Drama - Report

Players from the Iran women’s national football team have reportedly returned home after a dramatic and politically charged episode during the AFC Women’s Asian Cup. According to Fars News Agency, the squad crossed back into Iran via the Bazargan border

1 hours ago

<h4 class=
Business
US Fed holds interest rate steady at 3

US Fed holds interest rate steady at 3.5-3.75% despite higher inflationUS Federal Reserve has guided for a single interest rate cut in 2026 as officials took stock of economic impact of Iran war on US economy. Updated on: Mar 18, 2026 11:39 PM IST Reuters Share via Copy link The US Federal Reserve

1 hours ago

<h4 class=
Latest News
Indian national ‘Kenny Patel’ wanted by the FBI for defrauding victims in the US

Indian man wanted by FBI for defrauding victims in the US: What did Kalpeshkumar Rasikbhai Patel do?The Federal Bureau of Investigation has launched a hunt for an India national named Kalpeshkumar Rasikbhai Patel Published on: Mar 19, 2026 6:20 AM IST By Sanya Jain Share via Copy link The Federal

1 hours ago

Kerala's UDF, led by Congress and IUML, will contest 95 and 27 seats respectively in the upcoming assembly polls. The alliance aims to leverage recent
Politics
Congress to contest 95

Kerala's UDF, led by Congress and IUML, will contest 95 and 27 seats respectively in the upcoming assembly polls. The alliance aims to leverage recent electoral successes and anti-incumbency against the ruling LDF. Nominations close March 23, with voting on April 9 and results on May 4.Kerala's UDF

1 hours ago

<h4 class=
Latest News
Sc tells courts to notify convicts before appointing an amicus curiae

Sc tells courts to notify convicts before appointing an amicus curiaeThe Supreme Court mandates notification to convicts before appointing amicus curiae to ensure fairness in appeals and prevent claims of unfair hearings. Published on: Mar 19, 2026 7:50 AM IST By Utkarsh Anand

1 hours ago

The Union Cabinet has approved a ₹33,660-crore scheme to establish 100 plug-and-play industrial parks nationwide, aiming to boost manufacturing and create 15
World
Cabinet clears Rs 33

The Union Cabinet has approved a ₹33,660-crore scheme to establish 100 plug-and-play industrial parks nationwide, aiming to boost manufacturing and create 15 lakh direct jobs. Additionally, a ₹2,585-crore plan for small hydro power development and a national highway project in Uttar Pradesh

1 hours ago

Aditya Dhar’s Dhurandhar fever continues as the next instalment in the franchise, Dhurandhar: The Revenge, was released on Wednesday evening
Latest News
R Madhavan Reacts To Allu Arjun's Review

Aditya Dhar’s Dhurandhar fever continues as the next instalment in the franchise, Dhurandhar: The Revenge, was released on Wednesday evening. Many queued up to watch the film on the first day itself, including Allu Arjun, who then took to X to share his review of the film. Now

1 hours ago

The Delhi High Court has halted legal proceedings against Bina Modi, chairperson of Godfrey Phillips India, and others. This action follows a complaint by
World
Relief for Bina Modi in assault case filed by son

The Delhi High Court has halted legal proceedings against Bina Modi, chairperson of Godfrey Phillips India, and others. This action follows a complaint by former executive director Samir Modi alleging assault. Samir Modi claims he was physically attacked by his mother's security officer

1 hours ago

La Liga champions Barcelona moved into the quarterfinals of the UEFA Champions League with a commanding 7-2 win over Newcastle in the second leg of their Round
Latest News
Barcelona Breeze Into Quarters With Demolition Of Newcastle At Nou Camp As Lewy

La Liga champions Barcelona moved into the quarterfinals of the UEFA Champions League with a commanding 7-2 win over Newcastle in the second leg of their Round of 16 at the Nou Camp on Wednesday. Robert Lewandowski and Raphinha netted a brace each, while Lamine Yamal

1 hours ago

The hugely popular Labubu dolls will soon star in their own feature film, Chinese toy company Pop Mart and Sony Pictures have announced
World
Labubu movie in the works as viral toys attempt film crossover

The hugely popular Labubu dolls will soon star in their own feature film, Chinese toy company Pop Mart and Sony Pictures have announced. A Labubu movie that will combine live action and computer-generated animation is in "early development", the two companies said in a statement

1 hours ago

<h4 class=
Latest News
Obstructing demolition at hotel

Obstructing demolition at hotel: Ex-MP Rinku, former MLAs Angural, Beri among 24 bookedThe Jalandhar MC on Tuesday evening demolished a portion of the hotel owned by Chopra Hotels Private Limited, an entity associated with the Punjab Kesari group Published on: Mar 19

1 hours ago

<h4 class=
Horoscope
Love and Relationship Horoscope March 19

Love Horoscope March 19, 2026: A thoughtful Gesture Could Brighten Your DayDaily Love Horoscope for Feb 1, 2026: Explore relationship insights and emotional guidance for all sun signs today. Published on: Mar 19, 2026 6:02 AM IST By Neeraj Dhankher Share via Copy link Aries: Today

1 hours ago

<h4 class=
Business
Atanu Chakraborty resigns as HDFC Bank chairman due to ‘ethical concerns’

Atanu Chakraborty resigns as HDFC Bank's part-time chairman due to ‘ethical concerns’Keki Mistry, who serves on the HDFC Bank board, is taking charge as interim part-time chairman immediately, for a period of three months. Updated on: Mar 19

1 hours ago

<h4 class=
Sports
Barcelona, Liverpool, Bayern and Atletico reach Champions League quarter-finals

Barcelona, Liverpool, Bayern Munich and Atletico Madrid reach Champions League quarter-finals Updated on: Mar 19, 2026 7:20 AM IST AFP Share via Copy link Barcelona's German coach Hans-Dieter Flick and players celebrate after the Champions League last 16 second leg match win vs Newcastle United

1 hours ago

The Artesh, officially the Islamic Republic of Iran Army, is the conventional military of Iran, separate from the Islamic Revolutionary Guard Corps (IRGC)
World
The Army Branch That Absorbs The First Blow Explained

The Artesh, officially the Islamic Republic of Iran Army, is the conventional military of Iran, separate from the Islamic Revolutionary Guard Corps (IRGC). While the IRGC focuses on safeguarding the ideological system, the Artesh is tasked with defending Iran’s territorial integrity and borders

1 hours ago

It was not long ago that fans and pundits were admiring the power of the Premier League.</b> All six of its clubs competing in the Champions League
Sports
Four English teams out in 24 hours - what just happened and why

It was not long ago that fans and pundits were admiring the power of the Premier League. All six of its clubs competing in the Champions League reached the knockout stages of the competition for the first time. But across two legs of last-16 action

1 hours ago

<h4 class=
Entertainment
Allu Arjun hails Ranveer Singh

Allu Arjun showers praise on Ranveer Singh, Aditya Dhar after watching Dhurandhar 2: ‘Patriotism with swag’Allu Arjun took to social media to share a review after watching the second part of Aditya Dhar’s spy thriller Dhurandhar, which is led by Ranveer Singh. Mar 19, 2026

1 hours ago

<h4 class=
Entertainment
Prem Chopra on why he couldn't attend functions without scaring female guests

Prem Chopra recalls why he couldn't attend weddings, family functions without scaring female guests: Dad had to explain…Prem Chopra also said that Amitabh Bachchan's son-in-law Nikhil Nanda once got petrified and refused to enter his grandaunt's home for this reason. Mar 19, 2026

1 hours ago

Just a day after resigning from Congress, Assam Lok Sabha MP Pradyut Bordoloi on Wednesday joined the Bharatiya Janata Party (BJP) in the presence of Assam
Politics
Day After Quitting Congress

Just a day after resigning from Congress, Assam Lok Sabha MP Pradyut Bordoloi on Wednesday joined the Bharatiya Janata Party (BJP) in the presence of Assam Chief Minister Himanta Biswa Sarma and state BJP president Dilip Saikia. The development came after Bordoloi on Tuesday tendered his

1 hours ago

<strong>The Union government directed airlines to allocate a minimum of 60% of the seats on every flight without selection charges to ensure fair access
Latest News
Airlines to make 60% seats free of selection charge

The Union government directed airlines to allocate a minimum of 60% of the seats on every flight without selection charges to ensure fair access. Airlines are also required to seat passengers travelling on the same Passenger Name Record together “preferably in adjacent seats”

1 hours ago

Humour and science fiction may not seem obvious bedfellows but a history of cinema will tell you different. Think Spaceballs, Mars Attacks! and Everything
Life Style
Ryan Gosling on bringing humour to sci-fi adventure Project Hail Mary

Humour and science fiction may not seem obvious bedfellows but a history of cinema will tell you different. Think Spaceballs, Mars Attacks! and Everything Everwhere All At Once to name but a few. And now Ryan Gosling is hopping on board. The 45-year-old is both the lead actor and producer of

1 hours ago

Even as the 8th Pay Commission (8th CPC) has extended the deadline to submit responses to its 18-question document related to pay
Latest News
8th Pay Commission news

Even as the 8th Pay Commission (8th CPC) has extended the deadline to submit responses to its 18-question document related to pay, allowances and other job-related conditions of central government employees, Indian Railways Technical Supervisors’ Association (IRTSA) wants more elements to be

1 hours ago


Sing Up