Public research preview
Bruce Westerman, Representative disclosure: Costco Wholesale Corporation - Common Stock (COST)
Disclosed a buy transaction in Costco Wholesale Corporation - Common Stock (COST). Use this page to inspect source evidence, confidence scores, filing delay, and post-disclosure price movement before deciding whether to research the signal further.
This public page is for public-disclosure research only. It is not investment advice and does not place orders. Verify the official source before relying on any signal.
Evidence passport
Official-source context and parser confidence before any simulation or alert decision.
- Source
- House STOCK Act disclosures
- Published
- 16 Apr 2025, 00.00
- Parser confidence
- 94%
- Instrument mapping
- 95%
- Filing delay
- 44 days
Timeline
Transaction date
3 Mar 2025
Public disclosure
16 Apr 2025
Now
Tracked today
Filing delay: 44 days
Price movement
Complete coverage
- Provider
- Yahoo Finance daily close
- Fetched
- 11 Jun 2026
Stock path
COST from pre-transaction context through latest close.
Bought
3 Mar 2025 · 1.039,636 USD · Not public yet
System decision
Would not buy — The strategy's filters reject this signal. Failed filters: Filed within 30 days.
- Not public yet
- Would not buy
- Observed transaction close
- 1.039,636
- Observed disclosure close
- 961,081
- Observed latest close
- 979,535
- Pre-disclosure move
- -7.6%
- Post-disclosure move
- +1.9%
- Market-adjusted move
- -29.6%
- Pre-disclosure peak run-up
- +0.1%
- Retrace from peak
- -7.6%
Why Copy Window is Probably too late
Supporting factors
- Parsed buy disclosure for ordinary shares from House STOCK Act disclosures.
- Reported amount is $1,001 - $15,000.
- Post-disclosure move is calculated from Yahoo Finance daily close daily closes.
Cautions
- Yahoo Finance daily close coverage is end-of-day and should be verified against the official price source.
- Review the original source document before making any investment decision.
Source document
House STOCK Act disclosures, published 16 Apr 2025, 00.00
- Parser confidence
- 94%
- Instrument mapping
- 95%