- Quarter end
- 30 Jun 2026
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 3 Aug 2026
- Managers listing it
- 31
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q1 2026 and Q2 2026; 12 listed it in both
- Shares listed
- 41,674,959
- combined, among listed positions
- Reported value
- $3.0bn
- combined, at the quarter end
1 line marked †. Value as filed implies a price far from other filers'. Each counts in holders and value as filed, and is left out of the net change in shares.
AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.
Among the 91 comparable managers: 24 buyers (opened or added shares) and 9 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +981,053.
Managers listing COO in Q2 2026
31 of 31 holders
Largest increases and reductions, by shares
Increases
- Citadel Advisors LLCexisting position · 3,872,397 shares now+3,679,872
- Arrowstreet Capital LPexisting position · 4,004,357 shares now+1,878,057
- Janus Henderson Group Ltdexisting position · 4,254,267 shares now+1,187,142
- Holocene Advisors LPnew position · 1,080,677 shares now+1,080,677
- Harris Associates LPnew position · 766,520 shares now+766,520
Reductions
- Capital World Investorsexisting position · 591,128 shares now-6,823,821
- Neuberger Berman Group LLCexisting position · 353,523 shares now-3,040,517
- MFS Investment Managementexisting position · 2,343,776 shares now-274,504
- Jane Street Group LLCexisting position · 145,909 shares now-73,920
- Susquehanna International Group LLPexisting position · 22,813 shares now-24,958
New positions and exits
New (6)
Exited (3)
- ExodusPoint Capital Management LPwas $41m
- Man Group PLCwas $343k
- Acadian Asset Management LLCwas $51k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q1 2024 | 21 | $3.0bn | 21 | 0 |
| Q2 2024 | 19 | $2.5bn | 10 | 9 |
| Q3 2024 | 19 | $3.3bn | 7 | 11 |
| Q4 2024 | 16 | $2.9bn | 6 | 9 |
| Q1 2025 | 19 | $3.2bn | 14 | 6 |
| Q2 2025 | 21 | $3.0bn | 13 | 8 |
| Q3 2025 | 16 | $3.2bn | 8 | 9 |
| Q4 2025 | 17 | $3.4bn | 13 | 20 |
| Q1 2026 | 13 | $2.6bn | 11 | 19 |
| Q2 2026 | 19 | $2.6bn | 24 | 9 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
COO and LLY →COO and JNJ →COO and VRTX →Choose a stock to compare with COO →
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 COO, latest filings →Back to the 13F Explorer →