David A. Siegel Pfizer Inc Transaction History

Two Sigma Advisers, LP

$47 Billion
Q3 2025

A detailed history of David A. Siegel (Two Sigma Advisers, LP) transactions in Pfizer Inc stock. As of the latest transaction made, Two Sigma Advisers, LP holds 125,800 shares of PFE stock, worth $3.16 Million. This represents 0.01% of its overall portfolio holdings.

Number of Shares

125,800

Previous 288,500 56.4%

Holding current value

$3.16 Million

Previous $6.99 Million 54.17%

% of portfolio

0.01%

Previous 0.02%

33 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	SELL	$23.29 - $25.88 $3.79 Million - $4.21 Million	-162,700 Reduced 56.4%	125,800 $3.21 Million
Q2 2025 Aug 14, 2025	BUY	$21.59 - $24.84 $1.68 Million - $1.93 Million	77,700 Added 36.86%	288,500 $6.99 Million
Q1 2025 May 15, 2025	SELL	$25.01 - $27.13 $228 Million - $247 Million	-9,119,700 Reduced 97.74%	210,800 $5.34 Million
Q4 2024 Feb 14, 2025	SELL	$24.8 - $30.19 $189 Million - $230 Million	-7,622,100 Reduced 44.96%	9,330,500 $248 Million
Q3 2024 Nov 14, 2024	SELL	$27.7 - $31.39 $22.4 Million - $25.4 Million	-809,100 Reduced 4.56%	16,952,600 $491 Million

Q2 2024 Aug 14, 2024	BUY	$25.26 - $29.6 $106 Million - $125 Million	4,214,400 Added 31.11%	17,761,700 $497 Million
Q1 2024 May 15, 2024	BUY	$25.89 - $29.73 $272 Million - $313 Million	10,524,500 Added 348.17%	13,547,300 $376 Million
Q4 2023 Feb 14, 2024	SELL	$26.13 - $33.94 $260 Million - $337 Million	-9,934,301 Reduced 76.67%	3,022,800 $87 Million
Q3 2023 Nov 14, 2023	BUY	$32.09 - $37.51 $260 Million - $304 Million	8,109,000 Added 167.26%	12,957,101 $430 Million
Q2 2023 Aug 14, 2023	BUY	$36.12 - $41.79 $115 Million - $133 Million	3,172,200 Added 189.28%	4,848,101 $178 Million
Q1 2023 May 15, 2023	BUY	$39.39 - $51.28 $6.33 Million - $8.24 Million	160,600 Added 10.6%	1,675,901 $68.4 Million
Q4 2022 Feb 14, 2023	SELL	$41.75 - $54.5 $60.5 Million - $79 Million	-1,450,200 Reduced 48.9%	1,515,301 $77.7 Million
Q3 2022 Nov 14, 2022	BUY	$43.76 - $53.42 $48.5 Million - $59.2 Million	1,107,500 Added 59.61%	2,965,501 $130 Million
Q2 2022 Aug 15, 2022	SELL	$46.53 - $55.17 $108 Million - $128 Million	-2,324,100 Reduced 55.57%	1,858,001 $97.4 Million
Q1 2022 May 16, 2022	SELL	$45.75 - $56.69 $105 Million - $130 Million	-2,301,600 Reduced 35.5%	4,182,101 $217 Million
Q4 2021 Feb 14, 2022	BUY	$41.32 - $61.25 $226 Million - $335 Million	5,476,701 Added 543.86%	6,483,701 $383 Million
Q3 2021 Nov 15, 2021	SELL	$39.25 - $50.42 $384 Million - $493 Million	-9,778,301 Reduced 90.66%	1,007,000 $43.3 Million
Q2 2021 Aug 16, 2021	BUY	$35.91 - $40.68 $3.48 Million - $3.95 Million	97,000 Added 0.91%	10,785,301 $422 Million
Q1 2021 May 17, 2021	BUY	$33.49 - $37.77 $113 Million - $128 Million	3,383,600 Added 46.32%	10,688,301 $387 Million
Q4 2020 Feb 16, 2021	SELL	$33.47 - $42.56 $91.6 Million - $117 Million	-2,738,000 Reduced 27.26%	7,304,701 $269 Million
Q3 2020 Nov 16, 2020	SELL	$31.75 - $37.25 $32.5 Million - $38.1 Million	-1,023,800 Reduced 9.25%	10,042,701 $369 Million
Q2 2020 Aug 14, 2020	BUY	$30.12 - $36.54 $143 Million - $173 Million	4,736,500 Added 74.83%	11,066,501 $362 Million
Q1 2020 May 15, 2020	SELL	$27.03 - $38.62 $138 Million - $198 Million	-5,123,700 Reduced 44.73%	6,330,001 $207 Million
Q4 2019 Feb 14, 2020	BUY	$32.92 - $37.36 $152 Million - $173 Million	4,625,800 Added 67.75%	11,453,701 $449 Million
Q3 2019 Nov 14, 2019	BUY	$32.49 - $42.13 $85.1 Million - $110 Million	2,619,300 Added 62.24%	6,827,901 $245 Million
Q2 2019 Aug 14, 2019	BUY	$36.98 - $41.52 $61 Million - $68.5 Million	1,650,601 Added 64.53%	4,208,601 $182 Million
Q1 2019 May 15, 2019	BUY	$37.5 - $41.2 $513,750 - $564,440	13,700 Added 0.54%	2,558,000 $109 Million
Q4 2018 Feb 14, 2019	SELL	$38.47 - $43.86 $12 Million - $13.6 Million	-310,851 Reduced 10.89%	2,544,300 $111 Million
Q3 2018 Nov 14, 2018	SELL	$34.47 - $41.81 $38.1 Million - $46.2 Million	-1,105,800 Reduced 27.92%	2,855,151 $126 Million
Q2 2018 Aug 14, 2018	SELL	$32.98 - $35.16 $239 Million - $255 Million	-7,261,300 Reduced 64.7%	3,960,951 $144 Million
Q1 2018 May 15, 2018	BUY	$31.91 - $37.02 $19.4 Million - $22.5 Million	609,100 Added 5.74%	11,222,251 $398 Million
Q4 2017 Feb 14, 2018	BUY	$33.26 - $35.29 $24.6 Million - $26.1 Million	740,500 Added 7.5%	10,613,151 $384 Million
Q3 2017 Nov 14, 2017	BUY	$31.0 - $34.15 $306 Million - $337 Million	9,872,651	9,872,651 $352 Million

Others Institutions Holding PFE

# of Institutions

3,356

Shares Held

3.57B

Call Options Held

86.1M

Put Options Held

105M

View Full List

About PFIZER INC

Ticker PFE
Exchange NYSE
Sector Healthcare
Industry Drug Manufacturers—General
Shares Outstandng 5,612,349,952
Market Cap $141B
Description
Pfizer Inc. discovers, develops, manufactures, markets, distributes, and sells biopharmaceutical products worldwide. It offers medicines and vaccines in various therapeutic areas, including cardiovascular metabolic and women's health under the Premarin family and Eliquis brands; biologics, small molecules, immunotherapies, and biosimilars under ...

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