Chapter 8.34 min read

How Tariffs and Geopolitics Impact Markets

Two countries taxed each other's goods. An Indian company Riya was watching rose 6% on the news. Why?

8.3How Tariffs and Geopolitics Impact Markets

3.1A story that had nothing to do with her

Country A had imposed tariffs on a range of goods from Country B. Country B had promised to respond. Riya read two paragraphs, decided it was foreign politics, and would have moved on entirely except that a small Indian manufacturer on her watchlist had jumped six per cent that morning on no announcement of its own.

"Trace it," Raj said, when she rang. "You've got everything you need."

3.2What a tariff is, and what it does to a buyer

A **tariff** is a tax a government charges on imported goods. Governments use them to shelter domestic producers from cheaper foreign competition, to apply pressure in a dispute, or to raise revenue. The immediate, mechanical effect is that the imported good becomes more expensive for buyers in the taxing country.

"So a buyer in Country A is now paying more for the same thing from Country B," Riya said. "Which means their purchasing department starts looking at alternatives."

"And who is an alternative?"

"Anybody making a similar product who isn't in Country B. Which — if you make that product in India — means you just became cheaper relative to your competitor without touching your own price."

That is **trade diversion**: demand redirected to third-country suppliers by a barrier between two others. Riya's manufacturer hadn't done anything. Its competitive position had been improved by a decision made in a capital city it had no presence in.

3.3She buys

She did the work first, which was the part she was proud of afterwards even given what followed. She checked that the company genuinely exported to Country A, checked the scale of that revenue, checked the balance sheet, and satisfied herself the opportunity was real rather than a headline.

It was real. Over the following two quarters the company reported new orders from exactly the customers she'd expected, and said so explicitly.

The share price, by then, was below where she'd bought it.

3.4What she hadn't modelled

Country B retaliated, as it had promised. Not at Country A — that was the part Riya hadn't thought through. It broadened its own tariffs across a range of imports, and among the categories caught were goods coming from several other countries, India included.

Her manufacturer sold into Country B as well. Less than it sold to Country A, but enough to matter. It gained the business she had predicted and lost business she hadn't looked for, and the second effect was larger than the first.

"I was right," she said. "The mechanism worked exactly as I said it would. They got the orders. And I still lost money."

"You were right about one channel and there were two," Raj said. "That's not a failure of reasoning. It's the normal condition of reasoning about geopolitics — the second-order effects are usually larger than the first, and they're the ones nobody writes the headline about."

3.5The other company, in the mirror

The same retaliation produced a clean example in the other direction: a different Indian exporter, heavily dependent on Country B, whose shares fell sharply the week the broadened tariffs were announced. Nothing about its products, management or balance sheet had changed. Its largest customers had simply become more expensive to sell to.

This is the shape of the thing. One dispute, no Indian involvement, and two Indian companies moved in opposite directions — determined entirely by **who each one sells to**. There is rarely a single market-wide direction to a geopolitical event; there is a reshuffling, and the outcome for any holding depends on its specific exposure.

3.6Why the headline is usually too late

"Could I have traded it faster?" Riya asked. "If I'd read it the morning it broke rather than at lunch?"

"Your manufacturer was up six per cent before you finished the article. The obvious effects are priced within minutes by people whose job is to do exactly that." Raj said. "What took you two weeks — establishing whether the opportunity was real — is where an individual can add something. But the two weeks is also why you can't expect to capture the initial move."

"So the fast money got the six per cent and I got the second-order effect."

"That is a fairly accurate description of retail investors trading news, yes."

3.7The same argument, again

Riya's loss here was small, because the position was one holding among many. That sentence is the third time this course has arrived at the same place by a different route — an inspection, a recession, and now a trade dispute, each unpredictable in its own way, each survivable for the same structural reason.

"I keep learning the same lesson in different costumes," she said.

"You do. It's the only one that keeps applying."

3.8The wedding

Her cousin's wedding was in four months, and Riya was asked to come along to help choose the gold — a role in her family that carried more weight than she'd previously registered, and which she had apparently now qualified for by being the person who knew about money.

Her aunt said, in the car, the sentence that had been said at every wedding Riya had ever attended: *gold always holds its value.*

Riya had spent six years learning to be sceptical of sentences that confident. But she also couldn't immediately say what was wrong with this one — and it occurred to her, sitting in traffic, that she had never once thought seriously about an asset her family had been buying for four generations.

3.9The real world translation

In the storyIn the real world
A tax on goods entering Country AA tariff
Buyers switching to an Indian supplierTrade diversion to third countries
Country B broadening tariffs across importersRetaliatory measures with wider scope
Gaining one customer base and losing anotherSecond-order effects exceeding first-order ones
Two Indian firms moving opposite waysExposure, not nationality, determining the impact
Six per cent before she finished readingObvious effects priced within minutes

Key takeaways from this chapter

  1. 1.A tariff taxes imported goods, making them costlier for buyers in the taxing country and pushing demand toward alternative suppliers.
  2. 2.Trade diversion means a dispute between two countries can materially benefit companies in a third — including India.
  3. 3.Retaliation frequently has wider scope than the original measure, so the same dispute can reach a company through more than one channel.
  4. 4.Being right about a mechanism is not the same as being right about an outcome; a chain of reasoning that stops at the first-order effect can feel rigorous and still be wrong.
  5. 5.Geopolitical events reshuffle rather than uniformly raise or lower markets — impact depends on each company's specific customer exposure.
  6. 6.Obvious effects are priced within minutes, so reacting to a geopolitical headline is rarely where an individual investor's advantage lies.

Facts in this chapter last reviewed 2026-09-18.

Educational explanation using a fictional example (Aman, Riya and Raj are not real people; their bakery is not a real company). EquityTale is not registered with SEBI as an investment adviser or research analyst, and nothing here is investment advice, a recommendation, or a price target. See the full disclaimer.