Who owns Starz Entertainment Corp. (STRZ)
Which tracked institutional funds hold STRZ, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See STRZ company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
18 tracked funds added or opened STRZ while 19 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
STRZ’s largest tracked holder by dollar value, MHR FUND MANAGEMENT LLC, sizes it at 2.4% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 2.4pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in STRZ divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 141 tracked filers holding STRZ, 67 increased or opened the position and 65 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in STRZ between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 5
- BANK OF MONTREAL /CAN/$21M
- VANGUARD CAPITAL MANAGEMENT LLC$7M
- VANGUARD FIDUCIARY TRUST CO$931K
- VANGUARD PORTFOLIO MANAGEMENT LLC$766K
- RENAISSANCE TECHNOLOGIES LLC$577K
Full exits 7
- Liberty 77 Capital L.P.$21M
- Capital Research Global Investors$10M
- VANGUARD GROUP INC$8M
- Schonfeld Strategic Advisors LLC$2M
- AMERICAN CENTURY COMPANIES INC$988K
- LPL Financial LLC$866K
Largest adds
- CastleKnight Management LP$5M
- Russell Investments Group, Ltd.$2M
- Diametric Capital, LP$1M
- ACADIAN ASSET MANAGEMENT LLC$1M
- Ancora Advisors LLC$1M
- PEAK6 LLC$1M
Largest trims
- NewEdge Wealth, LLC$1M
- SHAPIRO CAPITAL MANAGEMENT LLC$993K
- Alpine Global Management, LLC$750K
- MORGAN STANLEY$654K
- ROYAL BANK OF CANADA$641K
- MHR FUND MANAGEMENT LLC$573K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| MHR FUND MANAGEMENT LLC | 2,863,232 | $33M | 14.5% | 2026-Q1 |
| BANK OF MONTREAL /CAN/ new | 1,803,950 | $21M | 9.1% | 2026-Q1 |
| BlackRock, Inc. trimmed | 1,173,292 | $13M | 5.9% | 2026-Q1 |
| CastleKnight Management LP added | 790,654 | $9M | 4.0% | 2026-Q1 |
| NewEdge Wealth, LLC trimmed | 619,742 | $7M | 3.1% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 568,234 | $7M | 2.9% | 2026-Q1 |
| SHAPIRO CAPITAL MANAGEMENT LLC trimmed | 555,546 | $6M | 2.8% | 2026-Q1 |
| ROYCE & ASSOCIATES LP added | 512,451 | $6M | 2.6% | 2026-Q1 |
| Ancora Advisors LLC added | 497,707 | $6M | 2.5% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 410,540 | $5M | 2.1% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC trimmed | 372,964 | $4M | 1.9% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 321,564 | $4M | 1.6% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 313,568 | $4M | 1.6% | 2026-Q1 |
| Jefferies Financial Group Inc. | 278,133 | $3M | 1.4% | 2026-Q1 |
| STATE STREET CORP trimmed | 272,069 | $3M | 1.4% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC added | 235,094 | $3M | 1.2% | 2026-Q1 |
| J. Goldman & Co LP trimmed | 221,792 | $3M | 1.1% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 182,276 | $2M | 0.9% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 164,084 | $2M | 0.8% | 2026-Q1 |
| Coastal Bridge Advisors, LLC added | 140,528 | $2M | 0.7% | 2026-Q1 |
| Huber Capital Management LLC trimmed | 139,933 | $2M | 0.7% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 138,808 | $2M | 0.7% | 2026-Q1 |
| Diametric Capital, LP added | 138,667 | $2M | 0.7% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 131,125 | $2M | 0.7% | 2026-Q1 |
| PEAK6 LLC added | 110,268 | $1M | 0.6% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 107,170 | $1M | 0.5% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 102,292 | $1M | 0.5% | 2026-Q1 |
| MARSHALL WACE, LLP trimmed | 99,717 | $1M | 0.5% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 90,937 | $1M | 0.5% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 90,575 | $1M | 0.5% | 2026-Q1 |
| Alpine Global Management, LLC trimmed | 86,100 | $990K | 0.4% | 2026-Q1 |
| GABELLI FUNDS LLC trimmed | 85,500 | $983K | 0.4% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 80,976 | $931K | 0.4% | 2026-Q1 |
| Verition Fund Management LLC added | 78,635 | $904K | 0.4% | 2026-Q1 |
| Nuveen, LLC trimmed | 78,209 | $899K | 0.4% | 2026-Q1 |
| GAMCO INVESTORS, INC. ET AL added | 72,411 | $833K | 0.4% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 66,584 | $766K | 0.3% | 2026-Q1 |
| MORGAN STANLEY trimmed | 57,993 | $667K | 0.3% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC new | 50,200 | $577K | 0.3% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. | 50,176 | $577K | 0.3% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 42,657 | $491K | 0.2% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 42,438 | $488K | 0.2% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 41,146 | $474K | 0.2% | 2026-Q1 |
| HSBC HOLDINGS PLC added | 40,747 | $469K | 0.2% | 2026-Q1 |
| Quantinno Capital Management LP trimmed | 39,454 | $454K | 0.2% | 2026-Q1 |
| XTX Topco Ltd new | 39,139 | $450K | 0.2% | 2026-Q1 |
| STRS OHIO trimmed | 39,100 | $450K | 0.2% | 2026-Q1 |
| Trexquant Investment LP trimmed | 37,186 | $428K | 0.2% | 2026-Q1 |
| PRELUDE CAPITAL MANAGEMENT, LLC added | 35,101 | $404K | 0.2% | 2026-Q1 |
| BARCLAYS PLC trimmed | 34,168 | $393K | 0.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 30,924 | $356K | 0.2% | 2026-Q1 |
| Vestcor Inc trimmed | 28,411 | $327K | 0.1% | 2026-Q1 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 27,070 | $311K | 0.1% | 2026-Q1 |
| KORNITZER CAPITAL MANAGEMENT INC /KS trimmed | 26,328 | $303K | 0.1% | 2026-Q1 |
| Susquehanna Portfolio Strategies, LLC new | 22,680 | $261K | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC new | 20,597 | $237K | 0.1% | 2026-Q1 |
| ALGERT GLOBAL LLC new | 20,344 | $234K | 0.1% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 20,161 | $232K | 0.1% | 2026-Q1 |
| MYDA Advisors LLC new | 20,000 | $230K | 0.1% | 2026-Q1 |
| WOLVERINE ASSET MANAGEMENT LLC | 19,190 | $221K | 0.1% | 2026-Q1 |
| Mariner, LLC new | 18,773 | $216K | 0.1% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 18,738 | $215K | 0.1% | 2026-Q1 |
| PANAGORA ASSET MANAGEMENT INC new | 18,561 | $213K | 0.1% | 2026-Q1 |
| Boston Partners new | 18,052 | $208K | 0.1% | 2026-Q1 |
| OPPENHEIMER ASSET MANAGEMENT INC. added | 18,031 | $207K | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO new | 16,540 | $190K | 0.1% | 2026-Q1 |
| HRT FINANCIAL LP trimmed | 15,554 | $178K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 15,166 | $174K | 0.1% | 2026-Q1 |
| HARBOR CAPITAL ADVISORS, INC. trimmed | 14,361 | $165K | 0.1% | 2026-Q1 |
| EverSource Wealth Advisors, LLC added | 3,924 | $161K | 0.1% | 2026-Q1 |
| Pathstone Holdings, LLC trimmed | 13,668 | $157K | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. | 12,124 | $142K | 0.1% | 2026-Q1 |
| Sequoia Financial Advisors, LLC | 10,688 | $123K | 0.1% | 2026-Q1 |
| Westmount Partners, LLC | 10,000 | $115K | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ | 7,248 | $83K | 0.0% | 2026-Q1 |
| MetLife Investment Management, LLC trimmed | 6,918 | $80K | 0.0% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 6,813 | $79K | 0.0% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 6,528 | $75K | 0.0% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 5,467 | $63K | 0.0% | 2026-Q1 |
| Liberty 77 Capital L.P. | 1,803,786 | $21M | 9.3% | 2025-Q4 stale |
| Capital Research Global Investors trimmed | 870,042 | $10M | 4.5% | 2025-Q4 stale |
| VANGUARD GROUP INC added | 714,892 | $8M | 3.7% | 2025-Q4 stale |
| SUMMIT WEALTH GROUP LLC / CO new | 31,759 | $2M | 0.9% | 2025-Q3 stale |
| Schonfeld Strategic Advisors LLC trimmed | 163,581 | $2M | 0.8% | 2025-Q4 stale |
| Honeycomb Asset Management LP new | 100,000 | $2M | 0.7% | 2025-Q2 stale |
| Y-Intercept (Hong Kong) Ltd new | 97,898 | $2M | 0.7% | 2025-Q2 stale |
| Potrero Capital Research LLC | 93,585 | $1M | 0.6% | 2025-Q3 stale |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO new | 63,021 | $1M | 0.4% | 2025-Q2 stale |
| AMERICAN CENTURY COMPANIES INC added | 84,472 | $988K | 0.4% | 2025-Q4 stale |
| LPL Financial LLC new | 74,051 | $866K | 0.4% | 2025-Q4 stale |
| PEREGRINE CAPITAL MANAGEMENT LLC new | 40,698 | $654K | 0.3% | 2025-Q2 stale |
| Beartown Capital Management, LLC new | 50,000 | $585K | 0.3% | 2025-Q4 stale |
| DARK FOREST CAPITAL MANAGEMENT LP new | 21,900 | $352K | 0.2% | 2025-Q2 stale |
| NORGES BANK new | 18,237 | $293K | 0.1% | 2025-Q2 stale |
| Invesco Ltd. new | 17,128 | $275K | 0.1% | 2025-Q2 stale |
| SYSTEMATIC FINANCIAL MANAGEMENT LP new | 21,000 | $246K | 0.1% | 2025-Q4 stale |
| DLD Asset Management, LP new | 20,000 | $234K | 0.1% | 2025-Q4 stale |
| Congress Park Capital LLC new | 11,269 | $181K | 0.1% | 2025-Q2 stale |
| Brevan Howard Capital Management LP new | 14,082 | $165K | 0.1% | 2025-Q4 stale |
| Yakira Capital Management, Inc. | 12,286 | $144K | 0.1% | 2025-Q4 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.