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I was speaking with my fellow advisors about how markets have been reacting recently, and it left me wondering: Does the Trump administration treat a falling stock market as the signal that it has gone too far?

When you look at how events have unfolded since 2025, there’s a pattern that’s difficult to ignore.

Time and again, the only consistent force that seems to influence policy changes has been the reaction from capital markets. When stocks drop in response to a political decision, the Trump administration adjusts course because of it.

The Trump Stock Market Reaction Pattern

We saw this first with tariffs. In April last year, the announcement of sweeping tariffs triggered an immediate and sharp selloff. But within a short period the rhetoric changed, timelines became more flexible, and the tone shifted from aggressive to negotiable. A similar thing happened again in October when more tariff threats surfaced. Markets reacted negatively, and once again, the stance was walked back and adjusted just enough to stabilise sentiment.

More recently, the same dynamic has been playing out through a different channel: oil.

The situation with Iran has caused a disruption to global oil flows, and by targeting supply, the pressure affected global economy. As tensions escalated over the past month and oil prices increased, markets reacted: risk assets like software, AI names, and crypto sold off as sentiment weakened. Then, almost on cue, the tone shifted again. Negotiation headlines emerged just before market open. Even when those discussions were not yet concrete, the de-escalation headline was enough to steady things.

This pattern changes the nature of what acts as a “check” on policy. Traditionally, big policy moves had been constrained by institutional or political action, but now, in practice, markets have become one of the most immediate and visible forms of feedback. A sharp drawdown in equities or a spike in oil doesn’t stay contained as it feeds into broader economic conditions.

What Is the “TACO Trade”?

Many have begun, half-jokingly, to refer to this ebb-and-flow as the T.A.C.O. trade: Trump Always Chickens Out.

The more it plays out, the quicker markets react and the quicker they recover. Markets are no longer the slow-moving indicators they used to be ten, even five, years ago.

Now, equities reprice within hours, oil moves instantly on supply concerns, and bond markets adjust expectations almost immediately.

When Markets Stop Acting as a Constraint

But, it seems that the TACO trade expectation has had a withdrawal effect on markets. Where before the response used to be sharper in either direction, now sentiment and markets seem less reactive because of take-back anticipation. The TACO trade sequence of events, whether coordinated or not, has become so recognisable that investors are less likely to act on whatever new fear is introduced.

“The so-called TACO trade […] has increasingly shaped positioning, with traders treating escalation itself as a buy signal, stepping in on weakness in anticipation of an eventual off-ramp.” said Yun Li, CNBC Markets & Investing reporter. “Each bout of geopolitical-driven selling has become progressively more muted since April 2025, with dips growing shallower as investors increasingly lean into the TACO trade and position for a quick reversal.”

Markets are getting used to this familiar pattern and so are investors. But the adaptation creates a new kind of risk. If sharp market declines have been acting – up until this point – as a form of feedback forcing policymakers to recalibrate, then what happens if that feedback loop weakens? One can only assume the White House may feel less urgency to de-escalate. Over time, that can encourage more aggressive positioning, increasing the chances of a miscalculation for investors.

What Investors Should Watch

The takeaway here is about recognising the overall structure of the environment. It means being aware that the biggest risks may not come from what the market is reacting to, but maybe from what it has started to ignore.