Institutional filer · SEC 13F · Q3 2025
EQUITEC PROPRIETARY MARKETS, LLC
The reported 13F portfolio of EQUITEC PROPRIETARY MARKETS, LLC (CIK 1143261) - top holdings, how concentrated the book is, and what changed last quarter.
- $392.7M
- Reported book
- 53
- Positions
- #119
- of 360 filers
The verdict
According to SEC Form 13F-HR filings in this corpus, EQUITEC PROPRIETARY MARKETS, LLC ranks #119 of 360 institutional filers by reported book value (largest first), matching the /funds listing. As of Q3 2025 the reported book is $392.7M across 53 positions, a concentrated portfolio led by a few core positions.
- $392.7M
- reported 13F value
- 53
- disclosed positions
- 63.8%
- in SPDR S&P 500 ETF TR
- #119
- of 360 filers
Top-5 share 96.9% → TOP-HEAVY book (largest five positions vs the rest of the reported 13F book).
According to SEC Form 13F-HR filings in this corpus, EQUITEC PROPRIETARY MARKETS, LLC ranks #119 of 360 institutional filers by reported book value (largest first), matching the /funds listing.
Where EQUITEC PROPRIETARY MARKETS, LLC sits by disclosed position count
EQUITEC PROPRIETARY MARKETS, LLC reports 53 13F positions among 360 filers with holdings (inventory signal, not a quality ranking). Orthogonal to book-value rank.
EQUITEC PROPRIETARY MARKETS, LLC vs all filers by holding count
Where this filer's disclosed position inventory sits among every tracked 13F manager
53 260th of 360 higher than 100 of 360 filers
Filers, banded by disclosed position count
Each bar is a band; taller bars hold more filers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source SEC Form 13F-HR filings · 2026-05-16
Concentration vs. book size among peer filers
EQUITEC PROPRIETARY MARKETS, LLC reports $0.39B across 53 disclosed positions, tracking the median among similarly sized peer filers on position count.
Reported book value vs. disclosed position count
How 13F filings are computed · All institutional filers · Largest filers by value
SEC Form 13F-HR filing desk
CIK 1143261 · Q3 2025 $393M book
BOOK-MID · POS-FOCUS · CONC-DOM · LEAD-DOM · PHOTO-FINISH · TREND-FLAT · FY-SNAPSHOT
- BOOK-MID #119/360
- POS-FOCUS 53 names
- CONC-DOM 97% top-5
- LEAD-DOM 63.8% SPDR S&P 500 ETF TR
- PHOTO-FINISH Blankinship & Foster,
- TREND-FLAT Book steady
- FY-SNAPSHOT Q3 2025
Photo-finish peer on reported book: Blankinship & Foster, LLC
Read with: Ownership concentration guide - EQUITEC PROPRIETARY MARKETS, LLC's top-five positions weigh 97% of its reported book — read concentration before inferring strategy.
Reported-book neighbourhood · EQUITEC PROPRIETARY MARKETS, LLC
Nearest tracked filers by aggregate 13F reported book, not a full corpus reprint.
How the reported book breaks down
$392.7M decomposed into the top 5 reported positions (shown below) versus every other disclosed position.
Top Reported Holdings
| # | Security | Value | % of book |
|---|---|---|---|
| 1 | SPDR S&P 500 ETF TR | $250.5M | 63.8% |
| 2 | NETFLIX INC | $119.9M | 30.5% |
| 3 | KELLANOVA | $4.2M | 1.1% |
| 4 | PARAMOUNT SKYDANCE CORP | $3.7M | 0.9% |
| 5 | ELECTRONIC ARTS INC | $2.2M | 0.6% |
| 6 | 89BIO INC | $1.9M | 0.5% |
| 7 | KAYNE ANDERSON BDC INC | $1.6M | 0.4% |
| 8 | SIRIUSXM HOLDINGS INC | $1.6M | 0.4% |
| 9 | WARNER BROS DISCOVERY INC | $1.2M | 0.3% |
| 10 | TESLA INC | $934K | 0.2% |
| 11 | VERONA PHARMA PLC | $875K | 0.2% |
| 12 | ARIS WATER SOLUTIONS INC | $673K | 0.2% |
| 13 | HERC HLDGS INC | $583K | 0.1% |
| 14 | SPIRIT AEROSYSTEMS HLDGS INC | $510K | 0.1% |
| 15 | WESTERN MIDSTREAM PARTNERS L | $381K | 0.1% |
| 16 | ZIMVIE INC | $341K | 0.1% |
| 17 | ROCKET COS INC | $275K | 0.1% |
| 18 | GAMESTOP CORP NEW | $235K | 0.1% |
| 19 | CADIZ INC | $155K | 0.0% |
| 20 | BIGBEAR AI HLDGS INC | $132K | 0.0% |
| 21 | D-WAVE QUANTUM INC | $129K | 0.0% |
| 22 | WOLFSPEED INC | $114K | 0.0% |
| 23 | COMPASS INC | $80K | 0.0% |
| 24 | PHARMACYTE BIOTECH INC | $80K | 0.0% |
| 25 | ISHARES TR | $71K | 0.0% |
Latest Quarter Trades · Q3 2025
New positions (52)
Frequently Asked Questions
- How big is EQUITEC PROPRIETARY MARKETS, LLC's 13F portfolio?
- EQUITEC PROPRIETARY MARKETS, LLC reports $392.7M of long US-equity positions across 53 securities as of Q3 2025. This reflects 13F-disclosed holdings only, it is not the firm's total assets under management.
- Where does EQUITEC PROPRIETARY MARKETS, LLC sit among tracked 13F filers?
- According to SEC Form 13F-HR filings in this corpus, EQUITEC PROPRIETARY MARKETS, LLC ranks #119 of 360 institutional filers by reported book value (largest first), matching the /funds listing. The ordinal is recomputed live from filers with reported book value > 0. See /methodology/#corpus-placement.
- What is EQUITEC PROPRIETARY MARKETS, LLC's largest position?
- EQUITEC PROPRIETARY MARKETS, LLC's largest reported position is SPDR S&P 500 ETF TR at $250.5M, about 63.8% of its reported book as of Q3 2025.
- What did EQUITEC PROPRIETARY MARKETS, LLC trade last quarter?
- In its Q3 2025 filing, EQUITEC PROPRIETARY MARKETS, LLC opened 52 new positions. Each change is drawn from a line in the firm's 13F-HR filing and can be verified on SEC EDGAR.
Nationwide filers with similar book size or holding count
Two 13F-derived peer sets for EQUITEC PROPRIETARY MARKETS, LLC: nearest reported book value and nearest holding inventory, not catalog browse links.
Similar reported book
Nearest filers by reported long-equity book ($392.7M here).
Similar holding count
Nearest filers by number of disclosed positions (53 here).
Using this filing
- The rankings sort every tracked filer the same way EQUITEC PROPRIETARY MARKETS, LLC was placed above, so you can see exactly how the rest of the field compares. View the rankings
- Blankinship & Foster, LLC reported the nearest book value ($392.5M) this quarter, a useful scale comparison for EQUITEC PROPRIETARY MARKETS, LLC. Compare filers
- 13F-HR reports long US-listed equity positions only, not total AUM, short positions, or non-equity holdings, treat the reported book as a partial picture. Read the methodology
Form 13F-HR discloses long US-listed equity positions of managers with $100M+ qualifying assets, filed within 45 days of period end. Reported value is not total AUM.
Source: U.S. Securities and Exchange Commission (SEC) - EDGAR Form 13F-HR institutional holdings filings · Q3 2025 13F-HR discloses long US-listed equity positions of managers with $100M+ qualifying assets, filed within 45 days of period end. Reported value is not total AUM.
PlainFundData is rendered directly from SEC EDGAR Form 13F-HR institutional holdings filings, no number is typed in by an editor. Filer holdings, changes, and reported book on this page are aggregated live from those 13F-HR extracts. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-16.