SIRI — SIRIUS XM HOLDINGS 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
21
all time
Members · 12m
2
0 buys · 2 sells · by trade date
Latest filing
03-04
2026-03-04
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.
6
13F holders
431
all 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
Congress 21Institutional 431

Congress · disclosure timeline

By trade date · 24 months · 4 rows ▲ buy, ▼ sell; height = lower bound (log scale). Trade date, not filing date — the filing lag is in the table below.

4 dated disclosures in the window, placed by trade date; magnitudes are the disclosed lower bounds, against gridlines at $15K, $250K, $5M.

Members active in SIRI

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 SIRI 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.
August Pfluger R–TX-111−$15.0K to −$1.0K2
John W. Hickenlooper D–CO1−$100K to −$50.0K4

2 members

Congressional disclosures

Newest filed firstAll 21 rows ↗
Latest congressional filings mentioning SIRI
FiledMemberSide · OwnerTraded · LagAmountRange · FlagsSrc
2026-03-04John W. Hickenlooper D–COSELL partial · SP (partial sale, spouse-owned)Traded 02-05 +27d$50K–$100K
2026-02-11August Pfluger R–TX-11SELL DC (dependent-child-owned)Traded 01-13 +29d$1K–$15K
2025-08-13August Pfluger R–TX-11EXCHANGETraded 2024-09-10 LATE·337d$1K–$15K
2025-08-13August Pfluger R–TX-11EXCHANGE SP (spouse-owned)Traded 2024-09-10 LATE·337d$1K–$15K
2025-07-23August Pfluger R–TX-11SELLTraded 07-01 +22d$1K–$15K
2025-05-26John W. Hickenlooper D–COSELL partial · SP (partial sale, spouse-owned)Traded 04-25 +31d$50K–$100K
2024-10-15Thomas H. Kean, Jr. R–NJ-7EXCHANGETraded 09-10 +35d$1K–$15K
2024-10-15John W. Hickenlooper D–COEXCHANGE SP (spouse-owned)Traded 09-09 +36d$100K–$250K
2023-06-15John W. Hickenlooper D–COSELL partial · SP (partial sale, spouse-owned)Traded 06-09 +6d$15K–$50K
2021-01-11Susie Lee D–NV-3SELL JT (jointly owned)Traded 2020-12-28 +14d$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 SIRI for quarter 2026-03-31, 1–25 of 431 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·§
1BERKSHIRE HATHAWAY INC$2.9B1
derived ·§ EDGAR ↗
2BlackRock, Inc.$222M1
derived ·§ EDGAR ↗
3VANGUARD PORTFOLIO MANAGEMENT LLC$201M1
derived ·§ EDGAR ↗
4VANGUARD CAPITAL MANAGEMENT LLC$192M1
derived ·§ EDGAR ↗
5DIMENSIONAL FUND ADVISORS LP$145M1
derived ·§ EDGAR ↗
6Kontiki Capital Management (HK) Ltd.$131M1
derived ·§ EDGAR ↗
7CANADA PENSION PLAN INVESTMENT BOARD$89.1M1
derived ·§ EDGAR ↗
8STATE STREET CORP$81.9M1
derived ·§ EDGAR ↗
9CITADEL ADVISORS LLC$75.3M1
derived ·§ EDGAR ↗
10AQR CAPITAL MANAGEMENT LLC$68.3M1
derived ·§ EDGAR ↗
11Gates Capital Management, Inc.$63.3M1
derived ·§ EDGAR ↗
12MORGAN STANLEY$49.8M1
derived ·§ EDGAR ↗
13SEIZERT CAPITAL PARTNERS, LLC$42.5M1
derived ·§ EDGAR ↗
14HSBC HOLDINGS PLC$41.6M1
derived ·§ EDGAR ↗
15TWO SIGMA INVESTMENTS, LP$41.0M1
derived ·§ EDGAR ↗
16CHARLES SCHWAB INVESTMENT MANAGEMENT INC$40.2M1
derived ·§ EDGAR ↗
17PRIVATE MANAGEMENT GROUP INC$31.2M1
derived ·§ EDGAR ↗
18WEITZ INVESTMENT MANAGEMENT, INC.$29.8M1
derived ·§ EDGAR ↗
19Gotham Asset Management, LLC$28.6M1
derived ·§ EDGAR ↗
20Tidal Investments LLC$27.9M1
derived ·§ EDGAR ↗
21UBS Group AG$27.3M1
derived ·§ EDGAR ↗
22HBK INVESTMENTS L P$26.9M1
derived ·§ EDGAR ↗
23VANGUARD FIDUCIARY TRUST CO$26.8M1
derived ·§ EDGAR ↗
24WITTENBERG INVESTMENT MANAGEMENT, INC.$25.6M1
derived ·§ EDGAR ↗
25NORTHERN TRUST CORP$25.3M1
derived ·§ EDGAR ↗
Show all 431 holders
Truncated by Public Filings. All 372 13F filers reporting this share class are listed. Method ↗

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

Congress ↔ notable managers · SIRI

Congress · last 90 days

Buyers
0 — —
Sellers
0 — —

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

Notable managers · quarter ended 2026-03-31

Trimming
0 — $0 held

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

Merged timeline of congressional filings and notable-manager moves on SIRI
DateWhoChangeSize
2026-05-15Berkshire Hathaway 13FNEW+124,807,117 sh
2026-05-15Gotham Asset Management 13FADD+395,206 sh
2026-05-15Bridgewater Associates 13FADD+3,033 sh

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

Congress vs filers

12 months
Congress net (rows)0 buy / 2 sell
Congress net ($ bound)−$115K to −$51.0K
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.