Who owns XSLLU
Which tracked institutional funds hold XSLLU, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See XSLLU company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-15). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
Conviction spread
XSLLU’s largest tracked holder by dollar value, ARISTEIA CAPITAL, L.L.C., sizes it at 0.7% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.6pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in XSLLU 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
Only one quarter (2026-Q1) of 13F history is available — a quarter-over-quarter accumulation delta needs two.
We do not publish a positioning read for a window we cannot measure honestly. A starting question, not a verdict.
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.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| ARISTEIA CAPITAL, L.L.C. new | 1,950,000 | $19M | 19.1% | 2026-Q1 |
| AQR Arbitrage LLC new | 1,311,960 | $13M | 12.9% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC new | 850,000 | $8M | 8.3% | 2026-Q1 |
| Lineage Point Capital LP new | 734,144 | $7M | 7.2% | 2026-Q1 |
| Calamos Advisors LLC new | 655,815 | $6M | 6.4% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS new | 638,040 | $6M | 6.3% | 2026-Q1 |
| WOLVERINE ASSET MANAGEMENT LLC new | 420,100 | $4M | 4.1% | 2026-Q1 |
| Cable Car Capital, LP new | 400,000 | $4M | 3.9% | 2026-Q1 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC new | 400,000 | $4M | 3.9% | 2026-Q1 |
| WHITEBOX ADVISORS LLC new | 385,000 | $4M | 3.8% | 2026-Q1 |
| Crossingbridge Advisors, LLC new | 385,000 | $4M | 3.8% | 2026-Q1 |
| RLH Capital LLC new | 300,000 | $3M | 2.9% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC new | 280,000 | $3M | 2.7% | 2026-Q1 |
| LMR Partners LLP new | 250,000 | $2M | 2.5% | 2026-Q1 |
| HGC Investment Management Inc. new | 235,000 | $2M | 2.3% | 2026-Q1 |
| Centiva Capital, LP new | 234,565 | $2M | 2.3% | 2026-Q1 |
| Quarry LP new | 200,000 | $2M | 2.0% | 2026-Q1 |
| PICTON MAHONEY ASSET MANAGEMENT new | 146,000 | $1M | 1.4% | 2026-Q1 |
| Yakira Capital Management, Inc. new | 140,000 | $1M | 1.4% | 2026-Q1 |
| HEIGHTS CAPITAL MANAGEMENT, INC new | 122,500 | $1M | 1.2% | 2026-Q1 |
| Clear Street Group Inc. new | 40,572 | $402K | 0.4% | 2026-Q1 |
| ABC ARBITRAGE SA new | 40,000 | $396K | 0.4% | 2026-Q1 |
| BOOTHBAY FUND MANAGEMENT, LLC new | 25,000 | $248K | 0.2% | 2026-Q1 |
| Marex Group plc new | 23,000 | $228K | 0.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP new | 14,574 | $144K | 0.1% | 2026-Q1 |
| TORONTO DOMINION BANK new | 4,685 | $46K | 0.0% | 2026-Q1 |
| UBS Group AG new | 600 | $6K | 0.0% | 2026-Q1 |
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.