BLLN — BILLIONTOONE INC

As of Q2 2026, 28 SEC-registered investment managers reported holding BLLN (BILLIONTOONE INC) in their latest 13F filings, with a combined reported value of $562.69M across 5.70M shares. That is +47.2% by share count (+1.83M shares) versus the previous quarter, while reported value moved +127.4%. Ownership is concentrated: the five largest holders account for 69.3% of reported value and the top ten for 89.4%.

Compared with the prior quarter, 8 opened new positions, 13 added to existing stakes, 5 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

BLLN is classified in the Health Care sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.