Who owns STOX (STOX)
Which tracked institutional funds hold STOX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See STOX company fundamentals →
Ownership as of the 2026-Q1 13F filings. 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
The tracked-fund tape on STOX is one-sided between 2025-Q4 and 2026-Q1: 3 added or opened and 1 trimmed or exited — on balance accumulating.
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
STOX’s largest tracked holder by dollar value, Bank of New York Mellon Corp, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes STOX more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in STOX 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 8 tracked filers holding STOX, 7 increased or opened the position and 0 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
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 STOX 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 2
- Cooper Financial Group$24M
- Simplicity Wealth,LLC$662K
Largest adds
- Cambridge Investment Research Advisors, Inc.$4M
Largest trims
- Bank of New York Mellon Corp$2M
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 |
|---|---|---|---|---|
| Bank of New York Mellon Corp added | 2,093,750 | $57M | 65.6% | 2026-Q1 |
| Cooper Financial Group new | 869,916 | $24M | 27.2% | 2026-Q1 |
| Cambridge Investment Research Advisors, Inc. added | 172,327 | $5M | 5.4% | 2026-Q1 |
| Simplicity Wealth,LLC new | 24,467 | $662K | 0.8% | 2026-Q1 |
| GTS SECURITIES LLC added | 16,797 | $454K | 0.5% | 2026-Q1 |
| JANE STREET GROUP, LLC new | 13,310 | $360K | 0.4% | 2026-Q1 |
| Horizon Investments, LLC added | 1,684 | $46K | 0.1% | 2026-Q1 |
| OSAIC HOLDINGS, INC. | 442 | $12K | 0.0% | 2026-Q1 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. new | 0 | — | 0.0% | 2025-Q2 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.