BSX — BOSTON SCIENTIFIC CORPToday's name, from the SEC's present-day ticker list — a present-day mapping, not the name as of each filing.

Congress trades
99
all time
Members · 12m
6
11 buys · 12 sells · by trade date
Latest filing
09-25
2026-09-25
Rows filed past the STOCK Act's 45-day window, stated on the row, never editorialised; both dates and the receipt stay on every row.
9
13F holders
1,354
top 500 listed · 2026-03-31
Congress: statutory ranges, filed up to 45 days after the trade · 13F: quarter-end snapshots, filed up to 45 days lateras of 2026-10-29

On Signals

ACTIVE HITS NAMING BSX · NEWEST FILED FIRST · EVERY HIT CARRIES ITS RECEIPTSignals ↗
Active signal hits naming BSX, newest filed first
KindWhoTraded → FiledSizeSrc
a disclosed trade in an issuer whose sector falls within a committee the member sat on as of the trade date (versioned mapping; membership dated) — context only: no legal, ethical, or causal conflict is established or impliedCisnerosTraded → Filed +23d$1.0K–$15.0K

1–1 of 1 line · 1 hit · each kind word opens its exact rule · every hit is in signals.v1.json.

COMMITTEE: Context, not an allegation.

Congress 99Institutional 500

Congress · disclosure timeline

By trade date · 24 months · 40 rows ▲ buy, ▼ sell; height = lower bound (log scale); ringed = on Signals. Trade date, not filing date — the filing lag is in the table below.

40 dated disclosures in the window, placed by trade date; magnitudes are the disclosed lower bounds, against gridlines at $15K, $250K, $5M; 1 ringed mark is a line of the Signals row above, pinned in the table below.

Members active in BSX

12 months · most active first Rows = number of disclosures, not dollars. Net = lower bound of the net range. Committees as of each member's latest trade in the window (roster snapshot 2026-10-29).
Members disclosing BSX in the trailing 12 months
MemberRowsNet disclosed flow for this ticker: purchases minus sales, computed as a net range on the disclosed amounts. A lower bound is provable, never a point.Number of committees the member sat on as of their latest trade date in the window, from the cc0-legislators roster snapshot. Context, never an allegation; jurisdiction overlap needs the sector join.
Gilbert Ray Cisneros, Jr. D–CA-3110−$22.0K to $118K2
Kevin Hern R–OK-16−$295K to −$118K1
Lisa C. McClain R–MI-93−$29.0K to $13.0K2
John Boozman R–AR2−$30.0K to −$2.0K6
Alan Armstrong R–OK1$1.0K to $15.0K2
Markwayne Mullin R–OK1$15.0K to $50.0K—

6 members

Congressional disclosures

Signals rows first, then newestAll 99 rows ↗
Latest congressional filings mentioning BSX, the rows on Signals first
FiledMemberSide · OwnerTraded · LagAmountRange · FlagsSrc
2026-09-10Gilbert Ray Cisneros, Jr. D–CA-31 On SignalsBUYTraded 08-18 +23d$1K–$15K
2026-09-25Kevin Hern R–OK-1SELL JT (jointly owned)Traded 09-09 +16d$50K–$100K
2026-09-25Kevin Hern R–OK-1SELL partial · JT (partial sale, jointly owned)Traded 09-04 +21d$50K–$100K
2026-09-25Kevin Hern R–OK-1SELL DC (dependent-child-owned)Traded 09-03 +22d$1K–$15K
2026-09-25Kevin Hern R–OK-1SELL DC (dependent-child-owned)Traded 09-03 +22d$1K–$15K
2026-09-25Kevin Hern R–OK-1SELL DC (dependent-child-owned)Traded 09-03 +22d$1K–$15K
2026-09-25Kevin Hern R–OK-1SELL JT (jointly owned)Traded 08-31 +25d$15K–$50K
2026-07-21Alan Armstrong R–OKBUYTraded 03-27 LATE·116d$1K–$15K
2026-07-13John Boozman R–ARSELL partial · JT (partial sale, jointly owned)Traded 06-04 +39d$1K–$15K
2026-07-02Gilbert Ray Cisneros, Jr. D–CA-31SELL partial (partial sale)Traded 06-05 +27d$1K–$15K

13F holders · Quarter ended 2026-03-31Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt. · longs only

All holders ↗
Top institutional holders of BSX for quarter 2026-03-31, 1–25 of 1,354 holders
#FilerValueSecuritiesFlagsderived by Public Filings from this build's reviewed ticker-mapping holders list for this share class; that list carries each holder's share count, share change and filed date (the full holders view shows them), but no document links — the EDGAR link opens the filer's 13F list·§
1BlackRock, Inc.$8.3B1
derived ·§ EDGAR ↗
2VANGUARD CAPITAL MANAGEMENT LLC$6.0B1
derived ·§ EDGAR ↗
3FMR LLC$4.7B1
derived ·§ EDGAR ↗
4STATE STREET CORP$4.3B1
derived ·§ EDGAR ↗
5GEODE CAPITAL MANAGEMENT, LLC$2.1B1
derived ·§ EDGAR ↗
6PRIMECAP MANAGEMENT CO/CA/$2.0B1
derived ·§ EDGAR ↗
7VANGUARD PORTFOLIO MANAGEMENT LLC$1.9B1
derived ·§ EDGAR ↗
8D. E. Shaw & Co., Inc.$1.5B1
derived ·§ EDGAR ↗
9BANK OF AMERICA CORP /DE/$1.4B1
derived ·§ EDGAR ↗
10MORGAN STANLEY$1.4B1
derived ·§ EDGAR ↗
11WELLINGTON MANAGEMENT GROUP LLP$1.2B1
derived ·§ EDGAR ↗
12Janus Henderson Group Ltd.$1.0B1
derived ·§ EDGAR ↗
13Capital World Investors$961M1
derived ·§ EDGAR ↗
14UBS Group AG$930M1
derived ·§ EDGAR ↗
15FRANKLIN RESOURCES INC$910M1
derived ·§ EDGAR ↗
16Amundi$886M1
derived ·§ EDGAR ↗
17ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$872M1
derived ·§ EDGAR ↗
18UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$848M1
derived ·§ EDGAR ↗
19NORTHERN TRUST CORP$839M1
derived ·§ EDGAR ↗
20DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main$830M1
derived ·§ EDGAR ↗
21Nuveen, LLC$736M1
derived ·§ EDGAR ↗
22MASSACHUSETTS FINANCIAL SERVICES CO /MA/$717M1
derived ·§ EDGAR ↗
23Legal & General Group Plc$665M1
derived ·§ EDGAR ↗
24Assenagon Asset Management S.A.$631M1
derived ·§ EDGAR ↗
25Bank of New York Mellon Corp$599M1
derived ·§ EDGAR ↗
Show the top 500 of 1,354 holders
Truncated by Public Filings. Top 500 of 1,354 holders shown; the rest are on EDGAR. Method ↗

Crowding — not available in this build. No holder rows for the selected period, so no percentile can be ranked.

Congress ↔ notable managers · BSX

Congress · last 90 days

Buyers
1 Gilbert Ray Cisneros, Jr. D–CA-31 $1K–$15K
Sellers
1 Kevin Hern R–OK-1 $118K–$295K

filed 2026-07-31 → 2026-10-29 · statutory ranges

Notable managers · quarter ended 2026-03-31

Adding
1 Gotham Asset Management $30.3M held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · BOSTON SCIENTIFIC CORP

Merged timeline of congressional filings and notable-manager moves on BSX
DateWhoChangeSize
2026-09-25Kevin Hern CongressSELL$50K–$100K
2026-09-25Kevin Hern CongressSELL$50K–$100K
2026-09-25Kevin Hern CongressSELL$1K–$15K
2026-09-25Kevin Hern CongressSELL$1K–$15K
2026-09-25Kevin Hern CongressSELL$1K–$15K
2026-09-25Kevin Hern CongressSELL$15K–$50K
2026-09-10Gilbert Ray Cisneros, Jr. CongressBUY$1K–$15K
2026-05-15Gotham Asset Management 13FADD+323,810 sh
2026-05-15Tudor Investment Corp 13FTRIM−100,286 sh
2026-05-15Lone Pine Capital 13FTRIM−97,048 sh
2026-05-15Bridgewater Associates 13FTRIM−16,753 sh
2026-05-15Viking Global Investors 13FEXIT−2,509,808 sh
2026-05-14Caxton Associates 13FTRIM−11,307 sh

13 newest, by filing date · 13F rows are quarter-end snapshots, not trades

Congress vs filers

12 months
Congress net (rows)11 buy / 12 sell
Congress net ($ bound)−$360K to $76.0K
Filersnot computedThe filer side needs per-issuer quarter-over-quarter actions, which the published aggregate does not carry for this issuer. Convergence and divergence are stated only when both sides are computed.