OGN Organon & Co.

NYSE
$13.64

Organon & Co. (OGN) Hedge Fund Activity

This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.

Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.

Hedge fund breadth
-8.57
16 buyers / 19 sellers
MIXED
Funds compared
37
funds with comparable OGN positions
28 current holders · 24 prior-quarter holders
Net share change
+19.66M
+35.03M added, -15.37M cut
Position activity
13 new 3 increased 10 reduced 9 exited

Most significant moves

Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.

Fund Action Shares changed Change Est. value Portfolio wt. Score
Pentwater Capital Management Event New +18.10M — $245.1M 2.0% 77
TIG Advisors Event New +1.40M — $19.0M 1.2% 63
Bridgewater Associates Quant Macro Sold Out -594.5K -100.0% $8.0M 0.0% 63
Capula Management Quant Macro New +3.05M — $41.3M 0.6% 62
Point72 Asset Management, L.P. Sold Out -238.0K -100.0% $3.2M 0.0% 61
Magnetar Capital Event Quant New +2.81M — $38.0M 0.5% 61
Polar Asset Management Partners Long/Short New +949.8K — $12.9M 0.5% 59
Man Group Event Long/Short New +4.18M — $56.6M 0.1% 58
Verition Fund Management Event Long/Short New +498.0K — $6.7M 0.1% 56
Balyasny Asset Management L.P. Increased +1.98M +908.1% $26.8M 0.1% 55

Most significant buyers

By move score, not size.

  • Pentwater Capital Management New · +18.10M
  • TIG Advisors New · +1.40M
  • Capula Management New · +3.05M
  • Magnetar Capital New · +2.81M
  • Polar Asset Management Partners New · +949.8K

Most significant sellers

By move score, not size.

  • Bridgewater Associates Sold Out · -594.5K
  • Point72 Asset Management, L.P. Sold Out · -238.0K
  • Jain Global Sold Out · -84.7K
  • Walleye Capital Sold Out · -393.1K
  • TWO SIGMA INVESTMENTS, LP Reduced · -2.90M

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Pentwater Capital Management 1 18.1M 0 +18.10M — 2.0% New 77
TIG Advisors 3 1.4M 0 +1.40M — 1.2% New 63
Bridgewater Associates 1 0 594.5K -594.5K -100.0% 0.0% Sold Out 63
Capula Management 2 3.0M 0 +3.05M — 0.6% New 62
Point72 Asset Management, L.P. 1 0 238.0K -238.0K -100.0% 0.0% Sold Out 61
Magnetar Capital 2 2.8M 0 +2.81M — 0.5% New 61
Polar Asset Management Partners 3 949.8K 0 +949.8K — 0.5% New 59
Man Group 3 4.2M 0 +4.18M — 0.1% New 58
Verition Fund Management 2 498.0K 0 +498.0K — 0.1% New 56
Balyasny Asset Management L.P. 2 2.2M 217.9K +1.98M +908.1% 0.1% Increased 55
Jain Global 3 0 84.7K -84.7K -100.0% 0.0% Sold Out 54
Walleye Capital 3 0 393.1K -393.1K -100.0% 0.0% Sold Out 53
Readystate Asset Management 3 351.9K 0 +351.9K — 0.3% New 53
Caxton Associates 3 15.6K 0 +15.6K — 0.0% New 53
TWO SIGMA INVESTMENTS, LP 2 241.4K 3.1M -2.90M -92.3% 0.0% Reduced 53
Trexquant Investment 3 0 402.8K -402.8K -100.0% 0.0% Sold Out 53
Centiva Capital 4 554.8K 0 +554.8K — 0.4% New 52
Winton Group 4 509.9K 0 +509.9K — 0.2% New 51
CITADEL ADVISORS LLC 1 344.4K 2.0M -1.65M -82.8% 0.0% Reduced 51
Brevan Howard Capital Management 3 0 163.1K -163.1K -100.0% 0.0% Sold Out 51
Schonfeld Strategic Advisors 3 0 52.5K -52.5K -100.0% 0.0% Sold Out 51
Lighthouse Investment Partners 3 0 47.3K -47.3K -100.0% 0.0% Sold Out 51
Wolverine Asset Management 2 207.9K 16.0K +192.0K +1202.7% 0.2% Increased 51
Y-Intercept 4 0 476.5K -476.5K -100.0% 0.0% Sold Out 50
D. E. Shaw & Co., Inc. 1 718.8K 2.6M -1.93M -72.8% 0.0% Reduced 49
LMR Partners 3 396.8K 13.2K +383.6K +2903.4% 0.1% Increased 49
Engineers Gate 4 52.7K 0 +52.7K — 0.0% New 48
Quantbot Technologies 4 1.9K 0 +1.9K — 0.0% New 45
MILLENNIUM MANAGEMENT LLC 2 3.4M 6.8M -3.34M -49.2% 0.0% Reduced 43
Tudor Investment Corporation 2 11.2K 37.5K -26.4K -70.2% 0.0% Reduced 40
AQR Capital Management 3 1.2M 3.5M -2.21M -63.9% 0.0% Reduced 40
Squarepoint Ops LLC 2 390.2K 831.4K -441.2K -53.1% 0.0% Reduced 39
ExodusPoint Capital Management 3 86.0K 182.8K -96.8K -52.9% 0.0% Reduced 36
Gotham Asset Management, LLC 2 1.0M 1.3M -224.7K -17.9% 0.0% Reduced 30
MARSHALL WACE, LLP 2 828.1K 933.2K -105.0K -11.3% 0.0% Reduced 30
Systematic Alpha Investments 2 41.1K 41.1K 0 +0.0% 0.0% Unchanged 18
ADAR1 Capital Management 3 10.0K 10.0K 0 +0.0% 0.0% Unchanged 17

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Hedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.