Public research preview
Rob Bresnahan, Representative disclosure: Biogen Inc. - Common Stock (BIIB)
Disclosed a buy transaction in Biogen Inc. - Common Stock (BIIB). 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
- 9 Jun 2025, 00:00
- Parser confidence
- 94%
- Instrument mapping
- 95%
- Filing delay
- 25 days
Timeline
Transaction date
15 May 2025
Public disclosure
9 Jun 2025
Now
Tracked today
Filing delay: 25 days
Price movement
Complete coverage
- Provider
- Yahoo Finance daily close
- Fetched
- 24 Jul 2026
Stock path
BIIB from pre-transaction context through latest close.
Bought
15 May 2025 · 123.7 USD · Not public yet
System decision
Would have bought — The strategy would have bought this signal, but the entry window has closed. Simulated entry on 9 Jun 2025 at 134.15 USD. Since entry: +50.7%. Planned exit on 6 Aug 2025 after 40 trading days.
- Not public yet
- Buy window
- Window closed
- System buy
- Planned exit
- Observed transaction close
- 123.7
- Observed disclosure close
- 134.15
- Observed latest close
- 202.19
- Pre-disclosure move
- +8.4%
- Post-disclosure move
- +50.7%
- Market-adjusted move
- +25.0%
- 1w since disclosure
- -2.3%
- 1m since disclosure
- -0.8%
- 3m since disclosure
- +5.4%
- Pre-disclosure peak run-up
- +8.4%
- Retrace from peak
- 0.0%
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 9 Jun 2025, 00:00
- Parser confidence
- 94%
- Instrument mapping
- 95%