MRK — Merck & Co., Inc.Today's name, from the SEC's present-day ticker list — a present-day mapping, not the name as of each filing.

Congress trades
214
all time
Members · 12m
5
5 buys · 4 sells · by trade date
Latest filing
10-07
2026-10-07
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.
51
13F holders
3,192
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 MRK · NEWEST FILED FIRST · EVERY HIT CARRIES ITS RECEIPTSignals ↗
Active signal hits naming MRK, newest filed first
KindWhoTraded → FiledSizeSrc
first disclosure of this ticker by this member within the corpus — era-scoped: coverage begins 2014-01-03, so an earlier first disclosure cannot be seen and is not claimed againstSalazarTraded → Filed +21d$15.0K–$50.0K

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

Congress 214Institutional 500

Congress · disclosure timeline

By trade date · 24 months · 43 rows ▲ buy, ▼ sell; height = lower bound (log scale); ringed = on Signals. Trade date, not filing date — the filing lag is in the table below.

43 dated disclosures in the window, placed by trade date; magnitudes are the disclosed lower bounds, against gridlines at $15K, $250K, $5M; 2 ringed marks are lines of the Signals row above, pinned in the table below.

Members active in MRK

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 MRK 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.
Maria Elvira Salazar R–FL-273$15.0K to $99.0K2
Gilbert Ray Cisneros, Jr. D–CA-312$2.0K to $30.0K2
Julie Johnson D–TX-322−$30.0K to −$2.0K4
Alan Armstrong R–OK1−$50.0K to −$15.0K2
Josh Gottheimer D–NJ-51$1.0K to $15.0K2

5 members

Congressional disclosures

Signals rows first, then newestAll 214 rows ↗
Latest congressional filings mentioning MRK, the rows on Signals first
FiledMemberSide · OwnerTraded · LagAmountRange · FlagsSrc
2026-09-09Maria Elvira Salazar R–FL-27 On SignalsBUYTraded 08-19 +21d$15K–$50K
2026-09-09Maria Elvira Salazar R–FL-27 On SignalsBUYTraded 08-19 +21d$15K–$50K
2026-10-07Maria Elvira Salazar R–FL-27SELL partial (partial sale)Traded 09-24 +13d$1K–$15K
2026-07-21Alan Armstrong R–OKSELLTraded 03-27 LATE·116d$15K–$50K
2026-03-16Josh Gottheimer D–NJ-5BUY JT (jointly owned)Traded 02-04 +40d$1K–$15K
2026-01-15Julie Johnson D–TX-32SELL JT (jointly owned)Traded 2025-12-18 +28d$1K–$15K
2026-01-12Gilbert Ray Cisneros, Jr. D–CA-31BUYTraded 2025-12-19 +24d$1K–$15K
2025-12-15Gilbert Ray Cisneros, Jr. D–CA-31BUYTraded 11-18 +27d$1K–$15K
2025-12-11Julie Johnson D–TX-32SELL partial · JT (partial sale, jointly owned)Traded 11-13 +28d$1K–$15K
2025-10-10Val T. Hoyle D–OR-4SELL SP (spouse-owned)Traded 09-23 +17d$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 MRK for quarter 2026-03-31, 1–25 of 3,192 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.$27.2B1
derived ·§ EDGAR ↗
2VANGUARD CAPITAL MANAGEMENT LLC$19.4B1
derived ·§ EDGAR ↗
3STATE STREET CORP$14.5B1
derived ·§ EDGAR ↗
4WELLINGTON MANAGEMENT GROUP LLP$10.1B1
derived ·§ EDGAR ↗
5VANGUARD PORTFOLIO MANAGEMENT LLC$8.1B1
derived ·§ EDGAR ↗
6GEODE CAPITAL MANAGEMENT, LLC$7.1B1
derived ·§ EDGAR ↗
7JPMORGAN CHASE & CO$6.3B1
derived ·§ EDGAR ↗
8CHARLES SCHWAB INVESTMENT MANAGEMENT INC$6.0B1
derived ·§ EDGAR ↗
9MORGAN STANLEY$5.7B1
derived ·§ EDGAR ↗
10FMR LLC$5.4B1
derived ·§ EDGAR ↗
11BANK OF AMERICA CORP /DE/$3.7B1
derived ·§ EDGAR ↗
12NORTHERN TRUST CORP$3.3B1
derived ·§ EDGAR ↗
13Fisher Asset Management, LLC$3.2B1
derived ·§ EDGAR ↗
14Invesco Ltd.$2.6B1
derived ·§ EDGAR ↗
15UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$2.5B1
derived ·§ EDGAR ↗
16Legal & General Group Plc$2.4B1
derived ·§ EDGAR ↗
17Bank of New York Mellon Corp$2.3B1
derived ·§ EDGAR ↗
18AMERIPRISE FINANCIAL INC$2.0B1
derived ·§ EDGAR ↗
19FRANKLIN RESOURCES INC$2.0B1
derived ·§ EDGAR ↗
20DIMENSIONAL FUND ADVISORS LP$1.9B1
derived ·§ EDGAR ↗
21VANGUARD FIDUCIARY TRUST CO$1.7B1
derived ·§ EDGAR ↗
22UBS Group AG$1.7B1
derived ·§ EDGAR ↗
23STATE FARM MUTUAL AUTOMOBILE INSURANCE CO$1.7B1
derived ·§ EDGAR ↗
24Amundi$1.7B1
derived ·§ EDGAR ↗
25ROYAL BANK OF CANADA$1.6B1
derived ·§ EDGAR ↗
Show the top 500 of 3,192 holders
Truncated by Public Filings. Top 500 of 3,192 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 · MRK

Congress · last 90 days

Buyers
1 Maria Elvira Salazar R–FL-27 $30K–$100K
Sellers
1 Maria Elvira Salazar R–FL-27 $1K–$15K

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

Notable managers · quarter ended 2026-03-31

Adding
1 Gotham Asset Management $60.9M held

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

Merged timeline of congressional filings and notable-manager moves on MRK
DateWhoChangeSize
2026-10-07Maria Elvira Salazar CongressSELL$1K–$15K
2026-09-09Maria Elvira Salazar CongressBUY$15K–$50K
2026-09-09Maria Elvira Salazar CongressBUY$15K–$50K
2026-05-15Gotham Asset Management 13FADD+59,124 sh
2026-05-15Bridgewater Associates 13FEXIT−310,221 sh
2026-05-14Caxton Associates 13FEXIT−250,000 sh

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

Congress vs filers

12 months
Congress net (rows)5 buy / 4 sell
Congress net ($ bound)−$62.0K to $127K
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.