SIRI — SIRIUS XM HOLDINGS INC

Ownership history in EQUITEC PROPRIETARY MARKETS, LLC  ·  20 quarters on record

AI Ownership Summary

EQUITEC PROPRIETARY MARKETS, LLC reported SIRIUS XM HOLDINGS INC (SIRI) in 20 quarterly 13F filings from 2024 Q1 through 2025 Q4. Peak portfolio weight reached 13.53% in 2024 Q3. The latest visible filing shows SIRI at 0.01% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings.

What this SIRI ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was EQUITEC PROPRIETARY MARKETS, LLC's position in SIRIUS XM HOLDINGS INC, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q4

SIRI was reported at 0.01% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
13.53% in 2024 Q3

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2024 Q1 to 2025 Q4

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

SIRI stock page EQUITEC PROPRIETARY MARKETS, LLC fund profile EQUITEC PROPRIETARY MARKETS, LLC full holdings
How EQUITEC PROPRIETARY MARKETS, LLC held SIRI — position size vs. price
% of Fund (quarterly)    SIRI price (quarter-end, indexed to 100)
📋 Quarterly Holdings History 20 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 REDUCED 520 -4,680 -90.0% 0.01% $10K 2026-02-14 (Est.) $21.29
2025 Q4 REDUCED 5,200 -64,100 -92.5% 0.06% $104K 2026-02-14 (Est.) $21.29
2025 Q4 ADDED 69,300 +68,780 +13226.9% 0.80% $1.4M 2026-02-14 (Est.) $21.29
2025 Q3 REDUCED 520 -67,380 -99.2% 0.00% $12K 2025-11-26 $20.65
2025 Q3 ADDED 67,900 +62,700 +1205.8% 0.36% $1.6M 2025-11-26 $20.65
2025 Q3 ADDED 5,200 +4,680 +900.0% 0.03% $121K 2025-11-26 $20.65
2025 Q2 REDUCED 520 -38,780 -98.7% 0.01% $12K 2025-08-06 $20.19
2025 Q2 ADDED 39,300 +34,100 +655.8% 0.85% $903K 2025-08-06 $20.19
2025 Q2 ADDED 5,200 +4,720 +983.3% 0.11% $119K 2025-08-06 $20.19
2025 Q1 REDUCED 480 -4,720 -90.8% 0.01% $11K 2025-05-14 $21.07
2025 Q1 REDUCED 5,200 -6,800 -56.7% 0.08% $117K 2025-05-14 $21.07
2025 Q1 REDUCED 12,000 -5,310 -30.7% 0.19% $271K 2025-05-14 $21.07
2024 Q4 REDUCED 17,310 -58,090 -77.0% 0.39% $395K 2025-01-29 $20.55
2024 Q4 REDUCED 75,400 -44,800 -37.3% 1.68% $1.7M 2025-01-29 $20.55
2024 Q4 ADDED 120,200 +56,390 +88.4% 2.68% $2.7M 2025-01-29 $20.55
2024 Q3 REDUCED 63,810 -149,490 -70.1% 1.28% $1.5M 2024-10-18 $25.71
2024 Q3 REDUCED 213,300 -459,100 -68.3% 4.29% $5.0M 2024-10-18 $25.71
2024 Q3 ADDED 672,400 +592,300 +739.5% 13.53% $15.9M 2024-10-18 $25.71
2024 Q1 ADDED 80,100 +65,100 +434.0% 0.17% $311K 2024-04-26 $27.63
2024 Q1 INITIATED 15,000 — — 0.03% $58K 2024-04-26 $27.63

🏢 Other funds also holding SIRI

As of 2026 Q1 — sorted by position size

Marex Group plc 0.01% Investors Research Corp 3Y 7Y 0.0% Ares Financial Consulting, LLC 0.0% GAMMA Investing LLC 0.0% HIGHLINE WEALTH PARTNERS LLC 0.0% CX Institutional 3Y 7Y 0.0%

FAQ About EQUITEC PROPRIETARY MARKETS, LLC and SIRI

These are the practical questions this page is built to answer before you even open the full history table.

How long has EQUITEC PROPRIETARY MARKETS, LLC reported owning SIRI?

EQUITEC PROPRIETARY MARKETS, LLC reported SIRI across 20 quarterly 13F filings, from 2024 Q1 through 2025 Q4.

What was the largest reported SIRI position in EQUITEC PROPRIETARY MARKETS, LLC's portfolio?

The largest reported portfolio weight for SIRI was 13.53% in 2024 Q3.

What is the latest reported SIRI position on this page?

The most recent filing on this page is 2025 Q4, when EQUITEC PROPRIETARY MARKETS, LLC reported 520 shares, equal to 0.01% of portfolio, with an estimated market value of $10K.

What does the chart on this SIRI ownership page compare?

The chart compares EQUITEC PROPRIETARY MARKETS, LLC's quarterly SIRI portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

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