Pfizer Inc.
CL ˙ SNSE ˙ US7170811035
SecurityCL:PFE / Pfizer Inc.
InstitutionMoors & Cabot, Inc.
Latest Disclosed Ownership294,767 shares
Latest Disclosed Value $ 8,277,056
Moors & Cabot, Inc. ownership in PFE / Pfizer Inc.

On May 8, 2026 - Moors & Cabot, Inc. filed a 13F-HR form disclosing ownership of 294,767 shares of Pfizer Inc. (CL:PFE) valued at $8,277,056 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 282,423 shares of Pfizer Inc.. This represents a change in shares of 4.37% during the quarter.

Moors & Cabot, Inc. has a history of taking positions in derivatives of the underlying security (PFE) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CL:PFE / Pfizer Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-08 2026-03-31 13F PFIZER COM 717081103 294,767 12,344 4.37 8,277 17.70 0.3543
2026-02-10 2025-12-31 13F PFIZER COM 717081103 282,423 -112,305 -28.45 7,032 -30.08 0.3010
2025-11-14 2025-09-30 13F PFIZER COM 717081103 394,728 -16,614 -4.04 10,058 0.87 0.4388
2025-08-06 2025-06-30 13F PFIZER COM 717081103 411,342 17,588 4.47 9,971 -0.07 0.4633
2025-05-08 2025-03-31 13F PFIZER COM 717081103 393,754 -8,676 -2.16 9,978 -6.55 0.5062
2025-02-07 2024-12-31 13F PFIZER COM 717081103 402,430 -31,289 -7.21 10,676 -14.94 0.5075
2024-11-08 2024-09-30 13F PFIZER COM 717081103 433,719 -17,463 -3.87 12,552 -0.58 0.6234
2024-08-09 2024-06-30 13F PFIZER COM 717081103 451,182 71,082 18.70 12,624 19.69 0.6722
2024-05-08 2024-03-31 13F PFIZER COM 717081103 380,100 138,492 57.32 10,548 51.65 0.5718
2024-02-14 2023-12-31 13F PFIZER COM 717081103 241,608 -10,932 -4.33 6,956 -16.97 0.4333
2023-11-08 2023-09-30 13F PFIZER COM 717081103 252,540 -84,147 -24.99 8,377 -32.17 0.5680
2023-08-10 2023-06-30 13F PFIZER COM 717081103 336,687 -5,552 -1.62 12,350 -11.56 0.8200
2023-05-05 2023-03-31 13F PFIZER COM 717081103 342,239 1,259 0.37 13,963 -20.08 0.9598
2023-02-10 2022-12-31 13F/A-1 PFIZER COM 717081103 340,980 -648 -0.19 17,472 16.86 1.2175
2023-02-07 2022-12-31 13F PFIZER COM 717081103 347,955 6,327 20,547 1.3687
2022-11-08 2022-09-30 13F PFIZER COM 717081103 341,628 -5,120 -1.48 14,950 -17.77 1.1394
2022-08-08 2022-06-30 13F PFIZER COM 717081103 346,748 -738 -0.21 18,180 1.06 1.3079
2022-05-13 2022-03-31 13F PFIZER COM 717081103 347,486 -17,778 -4.87 17,989 -16.60 1.1072
2022-02-14 2021-12-31 13F PFIZER COM 717081103 365,264 -365,932 -50.05 21,569 -31.48 1.3267
2021-12-08 2021-09-30 13F/A-1 PFIZER COM 717081103 731,196 375,173 105.38 31,478 125.78 1.9779
2021-11-05 2021-09-30 13F PFIZER COM 717081103 31,000 -325,023 31 0.0023
2021-08-10 2021-06-30 13F PFIZER COM 717081103 356,023 5,944 1.70 13,942 10.07 0.9778
2021-05-12 2021-03-31 13F PFIZER COM 717081103 350,079 20,647 6.27 12,667 4.48 0.9698
2021-02-11 2020-12-31 13F PFIZER COM 717081103 329,432 8,909 2.78 12,124 3.06 1.0194
2020-11-09 2020-09-30 13F PFIZER COM 717081103 320,523 57,179 21.71 11,764 36.57 1.1068
2020-08-13 2020-06-30 13F PFIZER COM 717081103 263,344 64,712 32.58 8,614 32.89 0.9175
2020-05-12 2020-03-31 13F PFIZER COM 717081103 198,632 -27,293 -12.08 6,482 -27.08 0.9418
2020-01-28 2019-12-31 13F PFIZER COM 717081103 225,925 624 0.28 8,889 9.78 0.8924
2019-10-22 2019-09-30 13F PFIZER COM 717081103 225,301 15,569 7.42 8,097 -10.88 0.8920
2019-07-18 2019-06-30 13F PFIZER COM 717081103 209,732 16,035 8.28 9,085 10.68 1.1514
2019-05-06 2019-03-31 13F/A-1 PFIZER COM 717081103 193,697 -2,504 -1.28 8,208 -4.30 1.1163
2019-05-01 2019-03-31 13F PFIZER COM 717081103 387,394 191,193 16,416
2019-02-13 2018-12-31 13F PFIZER COM 717081103 196,201 -18,843 -8.76 8,577 -9.43 1.3469
2018-11-14 2018-09-30 13F PFIZER COM 717081103 215,044 4,123 1.95 9,470 23.87 1.1565
2018-08-14 2018-06-30 13F PFIZER COM 717081103 210,921 -8,772 -3.99 7,645 -1.95 1.0299
2018-05-18 2018-03-31 13F PFIZER COM 717081103 219,693 5,223 2.44 7,797 0.55 1.0306
2018-02-13 2017-12-31 13F PFIZER COM 717081103 214,470 17,151 8.69 7,754 9.92 1.0271
2017-11-16 2017-09-30 13F PFIZER COM 717081103 197,319 14,240 7.78 7,054 14.59 1.0202
2017-08-15 2017-06-30 13F PFIZER COM 717081103 183,079 1,765 0.97 6,156 -0.61 1.0229
2017-05-15 2017-03-31 13F PFIZER COM 717081103 181,314 -13,379 -6.87 6,194 -1.65 1.0450
2017-02-13 2016-12-31 13F PFIZER COM 717081103 194,693 10,016 5.42 6,298 0.59 1.0367
2016-11-14 2016-09-30 13F PFIZER COM 717081103 184,677 9,251 5.27 6,261 1.16 1.0467
2016-08-08 2016-06-30 13F PFIZER COM 717081103 175,426 -3,185 -1.78 6,189 16.73 1.0873
2016-05-10 2016-03-31 13F PFIZER COM 717081103 178,611 1,759 0.99 5,302 -7.03 0.9569
2016-02-09 2015-12-31 13F PFIZER COM 717081103 176,852 177 0.10 5,703 2.96 1.0441
2015-11-17 2015-09-30 13F PFIZER COM 717081103 176,675 -2,235 -1.25 5,539 -7.81 1.0233
2015-08-17 2015-06-30 13F PFIZER COM 717081103 178,910 -3,683 -2.02 6,008 -5.24 0.9769
2015-05-14 2015-03-31 13F PFIZER COM 717081103 182,593 -7,992 -4.19 6,340 6.90 1.0575
2015-02-17 2014-12-31 13F PFIZER COM 717081103 190,585 -5,763 -2.94 5,931 1.87 1.0051
2014-11-12 2014-09-30 13F PFIZER COM 717081103 196,348 2,891 1.49 5,822 1.22 0.9903
2014-08-11 2014-06-30 13F PFIZER COM 717081103 193,457 28,100 16.99 5,752 8.30 0.9697
2014-05-08 2014-03-31 13F PFIZER COM 717081103 165,357 165,357 5,311 1.3434
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2022-08-08 2022-06-30 13F PFIZER COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-13 2022-03-31 13F PFIZER COM Call 100 2 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.