Public research preview
Lisa McClain, 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
- 13 Aug 2025, 00:00
- Parser confidence
- 94%
- Instrument mapping
- 95%
- Filing delay
- 245 days
Timeline
Transaction date
11 Dec 2024
Public disclosure
13 Aug 2025
Now
Tracked today
Filing delay: 245 days
Price movement
Complete coverage
- Provider
- Yahoo Finance daily close
- Fetched
- 10 Sept 2026
Stock path
COST from pre-transaction context through latest close.
Bought
11 Dec 2024 · 985.178 USD · Not public yet
System decision
Would have bought · Discount entry — The strategy would have bought this signal, but the entry window has closed. Simulated entry on 13 Aug 2025 at 973.172 USD. Since entry: -7.3%. Planned exit on 11 Sept 2025 after 20 trading days.
- Not public yet
- Buy window
- Window closed
- System buy
- Planned exit
- Observed transaction close
- 985.178
- Observed disclosure close
- 973.172
- Observed latest close
- 902.38
- Pre-disclosure move
- -1.2%
- Post-disclosure move
- -7.3%
- Market-adjusted move
- -26.1%
- 1w since disclosure
- +1.6%
- 1m since disclosure
- -1.1%
- 3m since disclosure
- -6.5%
- Pre-disclosure peak run-up
- +8.4%
- Retrace from peak
- -8.9%
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 13 Aug 2025, 00:00
- Parser confidence
- 94%
- Instrument mapping
- 95%