The Election Day Trade That's Been Hiding in Plain Sight

James Miller · 2026-10-07

Let me tell you about a little calendar quirk that's been quietly showing up around U.S. federal elections. It's not flashy, it's not complicated, and it's been pretty consistent across a whole bunch of assets. My team and I dug into it, and what we found might make you rethink how you position around election time. ### The Setup: A Pre-Election Drift You Might Already Know If you've been following our work, you know we've documented a robust pre-election drift in equities. But the real question was: what happens the day after? We'd only ever looked at SPY, and that felt incomplete. So we built a diversified ETF basket covering tech, emerging markets, real estate, high-yield credit, gold, oil, and foreign exchange. Seven legs, equal-weighted. The goal: see if this anomaly holds up across the board. ### Election Day Itself? Pretty Boring Here's the control arm of our experiment. If you went long an equal-weight basket on election day (D0), you'd earn about 1.03% per annum with a Sharpe of 0.19. That's modest. Not worth trading on its own. But it sets the stage. Because what happens next is where things get interesting. ### The D+1 Sell-Off: When the Uncertainty Premium Pops The day after the election, all seven legs systematically sell off. Why? The political uncertainty premium collapses. Think of it like a pressure valve releasing. An equal-weight short on D+1 yields 1.86% per annum with a Sharpe of 0.31 and a max drawdown of -4.16%. That's over just 13 trading days in 26 years. Not a lot of action, but when it shows up, it's consistent. > "The market doesn't like uncertainty, but it really doesn't like the moment uncertainty disappears." ### Intermediate Treasuries: The Mirror Image Here's a fun twist. Intermediate Treasuries do the opposite. They sell off in the four days before the vote, then rally from D0 to D+2. That trade has a Sharpe of 0.48. So while stocks are catching their breath post-election, bonds are already recovering. It's like a seesaw. ### What This Means for You Look, this isn't a get-rich-quick scheme. The returns are small, and the window is tiny. But it's a real pattern that's held up across assets and time. If you're a trading platform professional, you might want to backtest this yourself. See how it fits with your existing strategies. And remember: the best anomalies are often the ones hiding in plain sight. - **D0 long**: 1.03% p.a., Sharpe 0.19 (control, not traded) - **D+1 short**: 1.86% p.a., Sharpe 0.31, max drawdown -4.16% - **Intermediate Treasuries**: Sell pre-vote, rally D0-D+2, Sharpe 0.48 So next election cycle, keep an eye on that D+1 session. The crowd might be looking the other way.