Who owns BCTXL?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from SEC filings.
Institutional ownership of BCTXL from SEC Form 13F filings across 5 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 5 institutions disclosed 1.4M shares of BCTXL worth $1.2M; the largest disclosed holder is CITADEL ADVISORS LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
5
13F holders
$1.2M
value, 2026 filers
1.4M
shares disclosed
0
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of BCTXL's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | 895,864 | $716,781 | 0.0% | — | -14.6% |
| 2 | MYDA Advisors LLC | 195,821 | $174,281 | 0.0% | — | -2.1% |
| 3 | Warberg Asset Management LLC | 159,555 | $142,004 | 0.0% | — | +38.7% |
| 4 | Clear Street Group Inc. | 104,196 | $92,734 | 0.0% | — | 0.0% |
| 5 | IRIDIAN ASSET MANAGEMENT LLC/CT | 65,000 | $57,850 | 0.0% | — | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.