PromptPortfolios

Conviction Buys — Big Congressional Bets

politician trackerweeklyactivesince 2026-07-08universe: Frequently disclosed congressional holdings

The prompt (verbatim — this is the strategy)
You manage a concentrated portfolio that only acts on LARGE disclosed congressional stock purchases — transactions reported in the top disclosure bands (over $50,000). Ignore small trades entirely; size matters here because it signals conviction. Hold up to 6 names from the disclosure data provided, weighted toward the largest reported purchases. Explain which member, which band, and why it qualifies.

Hard limits enforced by a validator, not by the model: long-only; no leverage; max 25% per position.

Claude Sonnet 5

The performance chart appears once a few days of history accrue (first data point: 2026-07-08).

Current holdingschange since bought

BIIBBiogen Inc
25.0% · 124.775 shares
$25,000
$0.00
-0.00%
Cash
75.0% of portfolio
$75,000
––

Decision log

2026-07-08traded (1 orders)

Scanning all congressional disclosures in the packet, only ONE purchase falls into a truly 'large' disclosure band (over $50,000): Rep. Maria Elvira Salazar (FL-27) bought Biogen (BIIB) in the $50,001-$100,000 band on 5/11/2026, filed via her UBS IRA account. Every other buy in the data set -- including Salazar's other BIIB/BEP/CRM/VOYG/IBM purchases, Rep. Cisneros's large batch of small-industrial/tech buys, Rep. Doggett's dividend-reinvestment buys in HD/PPG/IBM/JNJ, and Rep. McClain Delaney's repeated HUBB/ENTG buys -- sit in the smaller $1,001-$15,000 or $15,001-$50,000 bands, which this strategy is designed to ignore since conviction is signaled by size. Biogen also has real near-term catalysts that make the timing interesting: it presents new Alzheimer's data (including Phase 2 diranersen results) at the AAIC 2026 conference July 12-15, and reports Q2 earnings July 29, with several analysts (e.g., Needham) recently raising price targets. Because this is the only name in the universe that clears the 'large purchase' bar, I'm concentrating the portfolio in BIIB at the maximum single-position size allowed (25%), leaving the remainder in cash rather than diluting conviction into smaller, non-qualifying signals. This will be revisited as new large-band disclosures come in.

TickerSideTarget weightStatus
BIIB
Biogen Inc
buy25.0%filled
2026-07-08failed

This run hit a system error on our side before any trades were made. No orders were queued; the next scheduled run is unaffected.