Which funds own COO
Cooper Cos Inc in the Q2 2026 filings. At least 5 of the 89 current managers on file reported a position, worth $683m between them. It is among the largest positions of fewer than a fifth of the current managers on file. The quarter went one way: 5 managers opened or added against 1 cutting.
- Managers holding
- 5
- at least, of 89 current
- Combined value
- $683m
- as reported
- Opened
- 3
- new this quarter
- Added to
- 2
- already held
- Trimmed or sold out
- 1
- 1 sold out entirely
Only each manager’s largest 200 positions are listed here, so a smaller holder may be missing.
Managers reporting a position
Largest first. Weight is the share of that manager’s whole reported book, which is the number worth quoting: $400m is a rounding error in one book and a defining bet in another.
| Manager | Value | Weight | Shares | Change on the quarter | Action |
|---|---|---|---|---|---|
| Arrowstreet Capital LP Quantitative · $225bn book | $287m | 0.1% | 4,004,357 | +$135m+1,878,057 | Added |
| Jana Partners Activist · $1.9bn book | $257m | 14% | 3,582,480 | +$2.0m+17,322 | Added |
| Holocene Advisors LP Long/short equity · $44.4bn book | $78m | 0.2% | 1,080,677 | opened1,080,677 | New |
| Harris Associates LP Activist · $75.4bn book | $55m | 0.1% | 766,520 | opened766,520 | New |
| Moore Capital Management LP Macro · $6.7bn book | $6.0m | 0.1% | 83,031 | opened83,031 | New |
Sold out of this quarter
Valued at what the position was worth in the previous filing, because by this one it is gone.
- ExodusPoint Capital Management LP · Multi-strategy$41m held before
Last reported earlier
These managers’ latest filings are from an earlier quarter, so they are not counted above.
- Janus Henderson Group Ltd · Q1 2026$219m · 0.1%
What COO is worth
Knowing who owns it is half the question. The other half is what it is worth against the companies it trades beside, which is the one an interviewer will follow up with.
Build the comp set around COO →How much of the picture this is
A Form 13F reports US-listed long equity and nothing else: no shorts, no bonds, no cash and no non-US listings. It arrives forty-five days after the quarter ends, so a manager who sold in July still shows the position in a filing published in August. This page reads the managers on file here rather than every filer in the market, and each manager’s largest positions rather than the whole table, so a small position in a very large book may not appear. Say “their last filing showed” rather than “they own”, and the distinction will do you credit.
What to do with a name the funds are buying
Knowing who owns something is the start of a pitch, not the pitch. The next questions are what it is worth and why they were buying.
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The holdings, every quarter, and the week between
One email a week on what moved in the market and what it means for the people interviewing into it, with the 13F changes the quarter they are filed.
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