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
- 12 Jun 2026
Stock path
COST from pre-transaction context through latest close.
Bought
11 Dec 2024 · 986,745 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 974,719 USD. Since entry: +0.4%. Planned exit on 11 Sept 2025 after 20 trading days.
- Not public yet
- Buy window
- Window closed
- System buy
- Planned exit
- Observed transaction close
- 986,745
- Observed disclosure close
- 974,719
- Observed latest close
- 978,16
- Pre-disclosure move
- -1.2%
- Post-disclosure move
- +0.4%
- Market-adjusted move
- -15.0%
- 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%