Congress Traded These Stocks Before Big Moves — What the Data Shows

Every quarter, members of Congress file STOCK Act disclosures — mandatory reports of stock trades executed within the previous 45 days. The public record is imperfect: filing delays are common, ranges are wide ($1,001–$15,000 or $1M–$5M+), and the disclosed information is minimal. But across a universe of 60 active congressional traders tracked by Flow Antenna, some patterns hold up remarkably well.

This piece looks at the disclosures that moved the market — the trades that, in hindsight, were positioned ahead of significant price moves — and examines what, if anything, separated them from the ones that didn't.

The 45-Day Problem

The STOCK Act requires disclosure within 45 days of a trade's execution. This creates a structural lag: by the time you read about a congressional trade, it's at minimum 1 day old and at maximum 45 days old. The average disclosure arrives about 22 days after execution, based on Flow Antenna's monitoring of 2,400+ disclosures in 2025–2026.

This lag matters more than most people assume. A 22-day-old trade in a stock that's already moved 15% is very different signal than a 2-day-old trade in a stock with unchanged price action. Flow Antenna tracks disclosure lag for each filing and includes it in the signal score — a fresh disclosure on a flat stock scores significantly higher than a stale one on an already-moved name.

The Trades That Moved

Across 60 active congressional traders monitored in 2025–2026, these are representative examples of disclosures that preceded meaningful price moves in the 30 days following public disclosure. These are illustrative of the pattern — not a complete universe of all trades.

The pattern is not that congressional traders are always right. It's that they're right more often on specific categories — defense contractors, healthcare policy, and government IT — where committee assignments create direct information advantages.

Which Committees Matter Most

The data is clearest in sectors with high government contract exposure. Members on the Armed Services Committee show above-average win rates on defense names. Members on the Finance and Banking committees outperform on financial sector trades. Members on Health committees are more accurate on pharma and biotech.

This is not controversial — it's what you'd expect if information advantages exist. Committee members know what spending bills are advancing, which contracts are being awarded, and which regulatory decisions are pending. The STOCK Act was supposed to close this gap. The enforcement record suggests otherwise.

What Doesn't Work

Not all congressional signals are worth following. Several patterns reliably underperform:

Late filings in already-moved stocks. If a disclosure arrives 40 days after execution and the stock is already up 20%, the market has already priced the information. These signals have near-zero predictive value in our analysis.

S&P 500 ETF or index fund trades. Many congressional disclosures are boring — SPY, QQQ, VTI. These reflect financial planning, not edge. Flow Antenna filters these out entirely; they add noise without signal.

Sectors without committee overlap. A senator buying a restaurant chain or a consumer goods company rarely has informational advantage. The edge is concentrated in sectors where government policy is the primary driver of outcomes.

Single-trade, low-amount disclosures. A $1,001–$15,000 purchase is the minimum reportable amount. Small single-trade disclosures from members without relevant committee assignments are the weakest signal in the universe.

The Disclosure Gap — And How to Close It

The core problem with congressional trading signals is the 45-day delay. By the time you can act on the information, the information is often stale.

There are two ways to address this. First, monitor at disclosure time — even with lag, fresh disclosures on flat stocks carry real signal. Second, look for convergence: when multiple independent sources (congressional disclosure + dark pool prints + options flow) all point to the same ticker simultaneously, the probability of a meaningful move increases substantially, regardless of which signal arrived first.

Flow Antenna's convergence scoring does exactly this. A congressional trade that also has recent dark pool activity and elevated options flow scores materially higher than a congressional trade in isolation. The combination of independent confirmation is where the real edge lives.

The Track Record, Honestly

Across 55+ closed positions where congressional trading was a primary or contributing signal, Flow Antenna's paper trading account has tracked the outcomes. Win rates on pure congressional signals are in the 50–55% range — marginally better than chance, consistent with the academic literature. When congressional signals converge with at least one other independent source, win rates rise to 60–65%.

That's a meaningful edge in trading — but it's not a money machine. Congress doesn't always beat the market. They beat it in specific sectors, in specific timing windows, and when their committee assignments are relevant to what they're buying.

The data is public. The disclosures are mandatory. The edge is available to anyone who monitors them systematically — which is exactly what Flow Antenna's congressional trading tracker is built to do.