BIIBBIIBBiogen Inc
29 members of Congress disclosed 98 transactions in BIIB between Dec 20, 2013 and Jun 5, 2026.
Price, with congressional trades marked
BIIB $208.02latest
+16%
Gilbert Ray Cisneros, Jr., Democrat
Gilbert Ray Cisneros, Jr., Democrat+13%
Alan Armstrong, Republican
Alan Armstrong, Republican+5%
Maria Elvira Salazar, Republican
Maria Elvira Salazar, Republican+10%Maria Elvira Salazar, Republican
Maria Elvira Salazar, RepublicanMarked trades (4)
| Traded | Member | Amount | Adj. close | BIIB since | SPY since | Difference | |
|---|---|---|---|---|---|---|---|
| Jan 30, 2026 | Gilbert Ray Cisneros, Jr. (D) | buy | ~$8K | $179.91 | +15.6% | +12.4% | +3.3% |
| Mar 27, 2026 | Alan Armstrong (R) | buy | ~$8K | $183.86 | +13.1% | +22.3% | -9.1% |
| May 11, 2026 | Maria Elvira Salazar (R) | buy | ~$75K | $198.03 | +5.0% | +4.9% | +0.2% |
| Jun 2, 2026 | Maria Elvira Salazar (R) | sell | ~$33K | $188.84 | +10.2% | +2.1% | +8.1% |
Prices are dividend- and split-adjusted, so “adj. close” is not necessarily what the stock printed that day. The horizon runs to the latest close, so rows with different trade dates are not comparable to each other — and none of these is the benchmark-relative, fixed-window alpha the leaderboard ranks on.
98
Transactions
66 buys · 32 sells
29
Members
$1.3M
Est. volume
14D / 15R
Party split
distinct members
Who traded it
| Member | Trades | Buys / Sells | Est. volume |
|---|---|---|---|
| Sheldon WhitehouseD-RI | 18 | 14 / 4 | ~$218K |
| Thomas MacArthurR-NJ | 8 | 6 / 2 | ~$156K |
| Maria Elvira SalazarR-FL | 4 | 3 / 1 | ~$124K |
| James B. RenacciR-OH | 11 | 10 / 1 | ~$113K |
| James M. InhofeR-OK | 2 | 1 / 1 | ~$108K |
| Rubén HinojosaD-TX | 10 | 5 / 5 | ~$80K |
| Harold RogersR-KY | 2 | 2 / 0 | ~$41K |
| Joseph P. Kennedy IIID-MA | 2 | 1 / 1 | ~$41K |
| Alan S. LowenthalD-CA | 2 | 1 / 1 | ~$41K |
| Shri ThanedarD-MI | 1 | 0 / 1 | ~$33K |
| Peter MeijerR-MI | 1 | 0 / 1 | ~$33K |
| Cheri BustosD-IL | 1 | 0 / 1 | ~$33K |
| Kurt SchraderD-OR | 4 | 4 / 0 | ~$32K |
| Michael T. McCaulR-TX | 4 | 4 / 0 | ~$32K |
| Gilbert Ray Cisneros, Jr.D-CA | 3 | 3 / 0 | ~$24K |
| Robert P. Bresnahan, Jr.R-PA | 3 | 2 / 1 | ~$24K |
| Kathy E. ManningD-NC | 3 | 1 / 2 | ~$24K |
| Mike KellyR-PA | 3 | 2 / 1 | ~$24K |
| Ed WhitfieldR-KY | 3 | 3 / 0 | ~$24K |
| Susan M. CollinsR-ME | 3 | 0 / 3 | ~$24K |
Transactions
98| Member | Type | Amount | Traded | Disclosed | Source |
|---|---|---|---|---|---|
| Buy | $1K – $15K | Mar 27, 2026 | Jul 21, 2026 116d · late | filing | |
| Sell | $15K – $50K | Jun 2, 2026 | Jul 7, 2026 35d | filing | |
| Buy | $1K – $15K | Jun 5, 2026 | Jul 2, 2026 27d | filing | |
| Buy | $1K – $15K | May 12, 2026 | Jun 8, 2026 27d | filing | |
| Buy | $1K – $15K | May 11, 2026 | Jun 8, 2026 28d | filing | |
| Buy | $50K – $100K | May 11, 2026 | Jun 8, 2026 28d | filing | |
| Buy | $1K – $15K | Jan 30, 2026 | Feb 13, 2026 14d | filing | |
| Buy | $1K – $15K | May 15, 2025 | Jun 9, 2025 25d | filing | |
| Sell | $1K – $15K | Apr 8, 2025 | May 8, 2025 30d | filing | |
| Buy | $1K – $15K | Feb 25, 2025 | Mar 27, 2025 30d | filing | |
| Buyspouse | $1K – $15K | Feb 2, 2021 | Nov 8, 2024 1375d · late | filing | |
| Sell (part) | $1K – $15K | Mar 6, 2023 | Apr 17, 2023 42d | filing | |
| Sell | $15K – $50K | Jan 23, 2023 | Feb 9, 2023 17d | filing | |
| Buychild | $1K – $15K | Nov 7, 2022 | Dec 6, 2022 29d | filing | |
| Selljoint | $1K – $15K | Aug 3, 2022 | Sep 14, 2022 42d | filing | |
| Buyjoint | $1K – $15K | Jul 20, 2022 | Aug 10, 2022 21d | filing | |
| Selljoint | $1K – $15K | Mar 17, 2022 | Apr 17, 2022 31d | filing | |
| Sellspouse | $1K – $15K | Jan 14, 2022 | Feb 11, 2022 28d | filing | |
| Sell | $15K – $50K | Feb 16, 2021 | Mar 16, 2021 28d | filing | |
| Buy | $1K – $15K | Sep 16, 2020 | Oct 14, 2020 28d | filing | |
| Sell | $1K – $15K | Jun 24, 2019 | Apr 27, 2020 308d · late | filing | |
| Sell (part) | $1K – $15K | Aug 13, 2019 | Sep 16, 2019 34d | filing | |
| Sell (part) | $1K – $15K | May 13, 2019 | Jun 13, 2019 31d | filing | |
| Buyspouse | $1K – $15K | Mar 12, 2019 | Apr 30, 2019 49d · late | filing | |
| Sellspouse | $1K – $15K | Mar 22, 2019 | Apr 17, 2019 26d | filing | |
| Sellspouse | $1K – $15K | Mar 25, 2019 | Apr 15, 2019 21d | filing | |
| Buychild | $1K – $15K | May 2, 2018 | Jun 5, 2018 34d | filing | |
| Buychild | $1K – $15K | May 2, 2018 | Jun 5, 2018 34d | filing | |
| Selljoint | $1K – $15K | Jan 8, 2018 | Feb 13, 2018 36d | filing | |
| Buyjoint | $1K – $15K | Jun 7, 2017 | Jun 22, 2017 15d | filing | |
| Sell | $15K – $50K | Jan 30, 2017 | Feb 9, 2017 10d | filing | |
| Sell (part)joint | $1K – $15K | Dec 23, 2016 | Jan 11, 2017 19d | filing | |
| Sell | $15K – $50K | Dec 13, 2016 | Jan 11, 2017 29d | filing | |
| Buychild | $1K – $15K | Dec 8, 2016 | Jan 7, 2017 30d | filing | |
| Buychild | $1K – $15K | Dec 8, 2016 | Jan 7, 2017 30d | filing | |
| Buyspouse | $1K – $15K | Nov 24, 2016 | Dec 6, 2016 12d | filing | |
| Sellspouse | $1K – $15K | Sep 1, 2016 | Sep 15, 2016 14d | filing unverified | |
| Buyspouse | $1K – $15K | Aug 17, 2016 | Sep 15, 2016 29d | filing unverified | |
| Buyspouse | $1K – $15K | Aug 3, 2016 | Aug 30, 2016 27d | filing | |
| Buyspouse | $1K – $15K | Aug 2, 2016 | Aug 30, 2016 28d | filing | |
| Buyspouse | $1K – $15K | Aug 1, 2016 | Aug 30, 2016 29d | filing | |
| Buyjoint | $1K – $15K | Aug 10, 2015 | Aug 11, 2016 367d · late | filing | |
| Buy | $1K – $15K | Aug 10, 2015 | Aug 11, 2016 367d · late | filing | |
| Buyspouse | $1K – $15K | Aug 4, 2015 | Aug 11, 2016 373d · late | filing | |
| Buy | $1K – $15K | Aug 4, 2015 | Aug 11, 2016 373d · late | filing | |
| Sell | $50K – $100K | Jul 21, 2016 | Aug 4, 2016 14d | filing | |
| Buyspouse | $1K – $15K | Jul 20, 2016 | Aug 3, 2016 14d | filing | |
| Buyjoint | $1K – $15K | Jun 21, 2016 | Jul 15, 2016 24d | filing unverified | |
| Buyjoint | $1K – $15K | Jun 18, 2016 | Jul 15, 2016 27d | filing unverified | |
| Buyjoint | $1K – $15K | Jun 17, 2016 | Jul 15, 2016 28d | filing unverified | |
| Buyjoint | $1K – $15K | Jun 14, 2016 | Jul 15, 2016 31d | filing unverified | |
| Buyjoint | $1K – $15K | Jun 1, 2016 | Jun 17, 2016 16d | filing | |
| Sellspouse | $15K – $50K | Apr 19, 2016 | May 5, 2016 16d | filing | |
| Buyspouse | $1K – $15K | Apr 18, 2016 | May 5, 2016 17d | filing | |
| Buy | $1K – $15K | Feb 4, 2016 | Mar 10, 2016 35d | filing | |
| Selljoint | $50K – $100K | Feb 2, 2016 | Mar 3, 2016 30d | filing | |
| Buy | $1K – $15K | Jan 25, 2016 | Feb 2, 2016 8d | filing | |
| Buy | $1K – $15K | Jan 19, 2016 | Feb 2, 2016 14d | filing | |
| Buyjoint | $15K – $50K | Oct 28, 2015 | Nov 5, 2015 8d | filing unverified | |
| Buychild | $1K – $15K | Sep 22, 2015 | Oct 8, 2015 16d | filing | |
| Buychild | $1K – $15K | Sep 22, 2015 | Oct 8, 2015 16d | filing | |
| Buyjoint | $1K – $15K | Aug 28, 2015 | Sep 24, 2015 27d | filing | |
| Buyjoint | $1K – $15K | Aug 10, 2015 | Sep 1, 2015 22d | filing | |
| Buy | $1K – $15K | Aug 10, 2015 | Sep 1, 2015 22d | filing | |
| Buy | $1K – $15K | Aug 4, 2015 | Sep 1, 2015 28d | filing | |
| Buyspouse | $1K – $15K | Aug 4, 2015 | Sep 1, 2015 28d | filing | |
| Buy | $15K – $50K | May 7, 2015 | Aug 12, 2015 97d · late | filing | |
| Selljoint | $15K – $50K | Jul 29, 2015 | Jul 29, 2015 0d | filing unverified | |
| Buyjoint | $1K – $15K | Jul 28, 2015 | Jul 29, 2015 1d | filing unverified | |
| Sellspouse | $1K – $15K | Jul 23, 2015 | Jul 25, 2015 2d | filing | |
| Buyjoint | $1K – $15K | Jul 10, 2015 | Jul 21, 2015 11d | filing | |
| Buy | $1K – $15K | Jul 10, 2015 | Jul 21, 2015 11d | filing | |
| Sellspouse | $1K – $15K | Jul 23, 2014 | Jul 20, 2015 362d · late | filing | |
| Buy | $15K – $50K | Jul 9, 2015 | Jul 15, 2015 6d | filing | |
| Buy | $15K – $50K | May 7, 2015 | Jun 3, 2015 27d | filing | |
| Buyspouse | $1K – $15K | Apr 29, 2015 | May 14, 2015 15d | filing | |
| Buyspouse | $15K – $50K | Apr 15, 2015 | May 2, 2015 17d | filing | |
| Buyspouse | $1K – $15K | Apr 7, 2015 | Apr 23, 2015 16d | filing | |
| Selljoint | $15K – $50K | Feb 4, 2015 | Mar 11, 2015 35d | filing | |
| Buyspouse | $1K – $15K | Dec 5, 2014 | Jan 21, 2015 47d · late | filing | |
| Buyspouse | $1K – $15K | Nov 20, 2014 | Dec 8, 2014 18d | filing | |
| Buyspouse | $1K – $15K | Oct 27, 2014 | Nov 10, 2014 14d | filing | |
| Buyjoint | $1K – $15K | Sep 19, 2014 | Nov 6, 2014 48d · late | filing | |
| Buyjoint | $1K – $15K | Aug 19, 2014 | Sep 12, 2014 24d | filing | |
| Sellspouse | $1K – $15K | Jul 23, 2014 | Aug 14, 2014 22d | filing | |
| Buyspouse | $1K – $15K | Apr 14, 2014 | May 9, 2014 25d | filing | |
| Buyspouse | $1K – $15K | Apr 10, 2014 | May 9, 2014 29d | filing | |
| Sell (part)spouse | $1K – $15K | Mar 27, 2014 | Apr 1, 2014 5d | filing | |
| Sellchild | $1K – $15K | Feb 27, 2014 | Mar 3, 2014 4d | filing | |
| Sellspouse | $1K – $15K | Feb 27, 2014 | Mar 3, 2014 4d | filing | |
| Sellspouse | $1K – $15K | Feb 27, 2014 | Mar 3, 2014 4d | filing | |
| Buy | $1K – $15K | Jan 24, 2014 | Feb 4, 2014 11d | filing | |
| Buy | $1K – $15K | Jan 24, 2014 | Feb 4, 2014 11d | filing | |
| Buychild | $1K – $15K | Jan 24, 2014 | Feb 4, 2014 11d | filing | |
| Buychild | $1K – $15K | Jan 24, 2014 | Feb 4, 2014 11d | filing | |
| Buy | $1K – $15K | Jan 16, 2014 | Feb 4, 2014 19d | filing | |
| Sellchild | $1K – $15K | Dec 31, 2013 | Jan 7, 2014 7d | filing | |
| Sellchild | $1K – $15K | Dec 20, 2013 | Jan 7, 2014 18d | filing |
Disclosures are filed up to 45 days after a trade, so this is a record rather than a signal. Amounts are bracket midpoints. Symbols are recorded as they existed on the trade date and mapped forward where a company was renamed.