CapitolRadar tracks every publicly disclosed BSX trade by US congress members and corporate insiders: 89 disclosed trades (42 buys, 47 sells) by 8 tracked traders, from 2019-04-25 to 2026-09-11. Updated daily from official filings.
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Boston Scientific Corporation (BSX) — Healthcare · Medical - Devices, market cap about $61.5B.
CapitolRadar analysis
20 trades, concentrated in one disclosed trader
20 BSX trades are tracked from February 17, 2022 through July 7, 2026: 12 buys and eight sells. All activity comes from one distinct trader, making this a small and highly concentrated sample rather than a broad measure of congressional or insider sentiment toward Boston Scientific Corporation. Ro Khanna is the only identified buyer, accounting for all 12 purchases; his latest recorded buy was June 2, 2026.
The overall split favors buys by count, at 12 versus eight, but transaction counts do not show the amount of capital involved. No transaction values are supplied here, and any disclosed amount ranges shown elsewhere are estimates rather than exact trade sizes.
4 trades in 2023 Q4 mark the busiest listed quarter
2023 Q4 has the largest quarterly count provided, with four trades: three buys and one sell. The next-highest listed period is 2022 Q3, when all three tracked trades were buys. Single-buy quarters appear in 2022 Q4, 2024 Q1, 2026 Q1 and 2026 Q2.
The listed one-trade sell quarters are 2025 Q4 and 2026 Q3, each reporting zero buys. This quarter-by-quarter history is uneven and based on very few observations, so changes between periods may reflect isolated transactions rather than a persistent pattern.
6 additional tickers overlap with the same buyer
The sole tracked BSX buyer also bought AME, BK, CMG, DIS, FTNT and IP. Because only one buyer is represented, each overlap is attributed to one of one tracked buyers and does not establish a wider cross-trader preference.
Congressional trade disclosures can carry a 45-day reporting lag, so disclosure timing may differ materially from transaction timing. Combined with estimated amount ranges and the one-trader sample, the data describes reported activity but provides limited evidence about its broader significance.
Analysis written from the tracked record on 2026-08-31; it is refreshed whenever the underlying numbers change.
Activity by quarter
| Quarter | Disclosed trades | Buys | Sells |
|---|---|---|---|
| 2026 Q3 | 9 | 2 | 7 |
| 2026 Q2 | 1 | 1 | 0 |
| 2026 Q1 | 2 | 2 | 0 |
| 2025 Q4 | 3 | 1 | 2 |
| 2024 Q1 | 1 | 1 | 0 |
| 2023 Q4 | 12 | 7 | 5 |
| 2023 Q3 | 3 | 1 | 2 |
| 2023 Q2 | 10 | 2 | 8 |
Who is buying BSX?
| Trader | Disclosed buys | Last buy | Grade |
|---|---|---|---|
| Ro Khanna | 13 | 2026-08-10 | — |
| Michael McCaul | 10 | 2026-03-27 | — |
| Lois Frankel | 10 | 2023-05-30 | — |
| Kevin Hern | 5 | 2021-07-21 | — |
| Markwayne Mullin | 3 | 2025-12-29 | — |
| Gilbert Cisneros | 1 | 2026-08-18 | — |
Disclosed trades in BSX
| Date | Who | Type | Amount | 30d vs SPY |
|---|---|---|---|---|
| 2026-09-11 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2026-09-09 | Kevin Hern | sell | $50,001 - $100,000 | — |
| 2026-09-04 | Kevin Hern | sell | $50,001 - $100,000 | — |
| 2026-09-04 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2026-09-03 | Kevin Hern | sell | $1,001 - $15,000 | — |
| 2026-08-31 | Kevin Hern | sell | $15,001 - $50,000 | — |
| 2026-08-18 | Gilbert Cisneros | buy | $1,001 - $15,000 | — |
| 2026-08-10 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2026-07-07 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2026-06-02 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2026-03-30 | Ro Khanna | buy | $15,001 - $50,000 | — |
| 2026-03-27 | Michael McCaul | buy | $1,001 - $15,000 | — |
| 2025-12-29 | Markwayne Mullin | buy | $15,001 - $50,000 | — |
| 2025-10-28 | Kevin Hern | sell | $15,001 - $50,000 | — |
| 2025-10-07 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2024-01-10 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2023-11-03 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2023-10-31 | Michael McCaul | sell | $50,001 - $100,000 | — |
| 2023-10-31 | Michael McCaul | sell | $15,001 - $50,000 | — |
| 2023-10-31 | Michael McCaul | buy | $15,001 - $50,000 | — |
CapitolRadar signal history
NEW PICK 2026-09-08
Rep. Ro Khanna disclosed buying $1,001 to $15,000 of Boston Scientific stock. The trade fell short mainly because Khanna has no verified trading record against the S&P 500, so the buyer signal is unproven. A documented history of similar trades consistently outperforming the market would have strengthened the case enough to reconsider the verdict.
These buyers also bought
Other stocks the tracked buyers of BSX disclosed buying in the last six months: WDAY (3) · TSM (3) · INTU (3) · APP (2) · MA (2) · AJG (2).
About Boston Scientific Corporation
Boston Scientific Corporation (BSX) operates as a global leader in medical technology, specializing in the design, manufacturing, and commercialization of innovative medical devices tailored for a diverse array of interventional medical specialties across the globe. Its business is strategically organized into three principal segments: MedSurg, Rhythm and Neuro, and Cardiovascular. Within these divisions, the company provides a comprehensive portfolio of solutions addressing various gastrointestinal and pulmonary ailments, as well as urological and pelvic health concerns. This extends to advan…
Frequently asked questions
Which politicians bought BSX most?
Ro Khanna leads with 13 disclosed buys, followed by Michael McCaul.
How current is this page?
It re-renders from the tracked record on every view and new filings are ingested daily — but STOCK Act disclosures can lag the trade by up to 45 days, so the most recent weeks are always incomplete.
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CapitolRadar tracks publicly disclosed trades (STOCK Act filings and SEC Form 4). Disclosures can lag the trade by up to 45 days. Backtests measure past disclosed buys against the S&P 500 and do not predict future results. Everything on this page is impersonal information for your own research — not investment advice.