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2,931 hedge funds and large institutions have $106B invested in Pfizer in 2026 Q1 according to their latest regulatory filings, with 253 funds opening new positions, 1,295 increasing their positions, 1,082 reducing their positions, and 168 closing their positions.

New
Increased
Maintained
Reduced
Closed

52% more funds holding in top 10

Funds holding in top 10: 3147 (+16)

51% more first-time investments, than exits

New positions opened: 253 | Existing positions closed: 168

20% more repeat investments, than reductions

Existing positions increased: 1,295 | Existing positions reduced: 1,082

15% more call options, than puts

Call options by funds: $3.08B | Put options by funds: $2.68B

14% more capital invested

Capital invested by funds: $93B → $106B (+$12.6B)

1% more funds holding

Funds holding: 2,9032,931 (+28)

0.45% more ownership

Funds ownership: 65.68%66.13% (+0.45%)

Holders
2,931
Holders Change
+28
Holders Change %
+0.96%
% of All Funds
36.1%
Holding in Top 10
47
Holding in Top 10 Change
+16
Holding in Top 10 Change %
+51.61%
% of All Funds
0.58%
New
253
Increased
1,295
Reduced
1,082
Closed
168
Calls
$3.08B
Puts
$2.68B
Net Calls
+$400M
Net Calls Change
+$993M
Name Holding Trade Value Shares
Change
Change in
Stake
D.E. Shaw & Co
51
D.E. Shaw & Co
New York
$350M +$241M +9,051,769 +265%
AQR Capital Management
52
AQR Capital Management
Connecticut
$334M +$54.8M +2,059,402 +21%
Raymond James Financial
53
Raymond James Financial
Florida
$328M +$4.99M +187,503 +2%
VAM
54
Vanguard Asset Management
$321M +$304M +11,424,753 New
Robeco Institutional Asset Management
55
Robeco Institutional Asset Management
Netherlands
$313M +$33.8M +1,267,791 +13%
California Public Employees Retirement System
56
California Public Employees Retirement System
California
$304M -$83.4M -3,133,806 -22%
Balyasny Asset Management
57
Balyasny Asset Management
Illinois
$294M +$51.3M +1,926,496 +23%
BNP Paribas Financial Markets
58
BNP Paribas Financial Markets
France
$278M -$176M -6,624,160 -40%
Stifel Financial
59
Stifel Financial
Missouri
$274M +$13.1M +491,819 +5%
Neuberger Berman Group
60
Neuberger Berman Group
New York
$272M +$62.1M +2,331,465 +32%
SG Americas Securities
61
SG Americas Securities
New York
$267M +$109M +4,100,329 +76%
Envestnet Asset Management
62
Envestnet Asset Management
Illinois
$262M +$18.6M +697,500 +8%
BIP
63
Brandes Investment Partners
California
$256M +$12.7M +478,043 +6%
California State Teachers Retirement System (CalSTRS)
64
California State Teachers Retirement System (CalSTRS)
California
$253M -$5.37M -201,827 -2%
RhumbLine Advisers
65
RhumbLine Advisers
Massachusetts
$249M +$1.75M +65,632 +0.7%
Fidelity International
66
Fidelity International
Bermuda
$246M -$13.3M -499,825 -5%
KBC Group
67
KBC Group
Belgium
$238M -$19.2M -721,799 -8%
Acadian Asset Management
68
Acadian Asset Management
Massachusetts
$236M +$176M +6,629,451 +374%
New York State Common Retirement Fund
69
New York State Common Retirement Fund
New York
$226M +$1.73M +65,000 +0.8%
Bank of Montreal
70
Bank of Montreal
Ontario, Canada
$215M -$52.6M -1,975,174 -20%
DekaBank Deutsche Girozentrale
71
DekaBank Deutsche Girozentrale
Germany
$211M
AIM
72
Artemis Investment Management
United Kingdom
$208M +$47.5M +1,782,628 +32%
Citadel Advisors
73
Citadel Advisors
Florida
$207M +$52M +1,952,489 +36%
SLAM
74
Swiss Life Asset Management
$206M +$13.1M +491,766 +7%
Voloridge Investment Management
75
Voloridge Investment Management
Florida
$196M +$73.1M +2,743,945 +65%