- Quarter end
- 30 Jun 2026
- the date the book describes
- Filed
- 2 Sep 2026
- latest of these filings; the earliest 12 Aug 2026
- Managers listing it
- 25
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q1 2026 and Q2 2026; 5 listed it in both
- Shares listed
- 22,071,605
- combined, among listed positions
- Reported value
- $366m
- combined, at the quarter end
Among the 91 comparable managers: 16 buyers (opened or added shares) and 7 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +2,679,567.
Managers listing BLCO in Q2 2026
25 of 25 holders
Largest increases and reductions, by shares
Increases
- Davidson Kempner Capital Management LPexisting position · 3,158,972 shares now+959,800
- T. Rowe Price Associates Incexisting position · 2,161,232 shares now+936,629
- Arrowstreet Capital LPexisting position · 1,364,980 shares now+382,918
- Citadel Advisors LLCexisting position · 987,730 shares now+282,509
- D. E. Shaw & Co.existing position · 3,323,021 shares now+171,854
Reductions
- Jane Street Group LLCexisting position · 181,520 shares now-140,738
- Millennium Management LLCexisting position · 176,740 shares now-126,423
- Point72 Asset Management LPexisting position · 175,819 shares now-107,319
- Balyasny Asset Management LLCexisting position · 69,533 shares now-63,729
- Invesco Ltdexisting position · 10,753 shares now-463
New positions and exits
New (3)
- Third Point LLC$1.4m
- Schonfeld Strategic Advisors LLC$1.4m
- Man Group PLC$789k
Exited (2)
- Fidelity (FMR LLC)was $1.8m
- Verition Fund Management LLCwas $434k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q2 2022 | 3 | $63m | n.a. | n.a. |
| Q3 2022 | 4 | $100m | n.a. | n.a. |
| Q4 2022 | 2 | $63m | n.a. | n.a. |
| Q1 2023 | 2 | $90m | n.a. | n.a. |
| Q2 2023 | 3 | $87m | n.a. | n.a. |
| Q3 2023 | 4 | $69m | n.a. | n.a. |
| Q4 2023 | 4 | $66m | 1 | 1 |
| Q1 2024 | 4 | $73m | 3 | 0 |
| Q2 2024 | 5 | $74m | 2 | 1 |
| Q3 2024 | 5 | $97m | 2 | 2 |
| Q4 2024 | 5 | $82m | 1 | 3 |
| Q1 2025 | 3 | $59m | 2 | 0 |
| Q2 2025 | 4 | $101m | 3 | 0 |
| Q3 2025 | 7 | $158m | 4 | 0 |
| Q4 2025 | 7 | $198m | 17 | 6 |
| Q1 2026 | 5 | $178m | 11 | 12 |
| Q2 2026 | 6 | $203m | 16 | 7 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
BLCO and LLY →BLCO and JNJ →BLCO and VRTX →Choose a stock to compare with BLCO →
How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own BLCO, latest filings →Back to the 13F Explorer →