AbbVie Inc.
MX ˙ BMV ˙ US00287Y1091
SecurityMX:ABBV / AbbVie Inc.
InstitutionWestchester Capital Management, Inc.
Latest Disclosed Ownership103,643 shares
Latest Disclosed Value $ 22,541,316
Westchester Capital Management, Inc. reports 1.34% increase in ownership of ABBV / AbbVie Inc.

On May 6, 2026 - Westchester Capital Management, Inc. filed a 13F-HR form disclosing ownership of 103,643 shares of AbbVie Inc. (MX:ABBV) valued at $22,541,316 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 102,271 shares of AbbVie Inc.. This represents a change in shares of 1.34% during the quarter.

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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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)
2026-05-06 2026-03-31 13F AbbVie common stock 00287Y109 103,643 1,372 1.34 22,541 -3.53 4.5398
2026-02-12 2025-12-31 13F AbbVie common stock 00287Y109 102,271 -1,651 -1.59 23,368 -2.89 4.8306
2025-11-07 2025-09-30 13F AbbVie common stock 00287Y109 103,922 -868 -0.83 24,062 23.71 5.1729
2025-07-25 2025-06-30 13F AbbVie common stock 00287Y109 104,790 1,010 0.97 19,451 -10.54 4.5771
2025-05-09 2025-03-31 13F AbbVie common stock 00287Y109 103,780 -368 -0.35 21,744 17.49 5.4061
2025-02-10 2024-12-31 13F AbbVie common stock 00287Y109 104,148 -1,442 -1.37 18,507 -11.24 4.6549
2024-11-01 2024-09-30 13F AbbVie common stock 00287Y109 105,590 -1,105 -1.04 20,852 13.94 5.0648
2024-07-29 2024-06-30 13F AbbVie common stock 00287Y109 106,695 5,213 5.14 18,300 -0.97 4.6205
2024-05-03 2024-03-31 13F AbbVie common stock 00287Y109 101,482 -1,785 -1.73 18,480 15.47 4.6390
2024-01-29 2023-12-31 13F AbbVie common stock 00287Y109 103,267 -830 -0.80 16,003 3.14 4.3075
2023-11-08 2023-09-30 13F AbbVie common stock 00287Y109 104,097 276 0.27 15,517 10.93 4.4443
2023-08-14 2023-06-30 13F AbbVie common stock 00287Y109 103,821 173 0.17 13,988 -15.32 3.8946
2023-05-15 2023-03-31 13F AbbVie common stock 00287Y109 103,648 -2,681 -2.52 16,518 -3.87 4.7504
2023-02-08 2022-12-31 13F AbbVie common stock 00287Y109 106,329 -4,232 -3.83 17,184 15.80 5.0571
2022-11-10 2022-09-30 13F AbbVie common stock 00287Y109 110,561 -194 -0.18 14,838 -12.53 4.7860
2022-08-09 2022-06-30 13F AbbVie common stock 00287Y109 110,755 -146 -0.13 16,963 -5.65 5.1779
2022-05-10 2022-03-31 13F AbbVie common stock 00287Y109 110,901 -1,215 -1.08 17,978 18.42 4.6365
2022-02-09 2021-12-31 13F AbbVie common stock 00287Y109 112,116 -2,242 -1.96 15,181 23.06 3.8760
2021-11-10 2021-09-30 13F AbbVie common stock 00287Y109 114,358 -385 -0.34 12,336 -4.56 3.4364
2021-08-04 2021-06-30 13F AbbVie common stock 00287Y109 114,743 -1,727 -1.48 12,925 2.55 3.6262
2021-05-07 2021-03-31 13F AbbVie common stock 00287Y109 116,470 -532 -0.45 12,604 0.53 3.6505
2021-02-08 2020-12-31 13F AbbVie common stock 00287Y109 117,002 -946 -0.80 12,537 21.35 3.9577
2020-11-13 2020-09-30 13F AbbVie common stock 00287Y109 117,948 -139 -0.12 10,331 -10.89 3.6666
2020-08-10 2020-06-30 13F AbbVie common stock 00287Y109 118,087 518 0.44 11,594 29.43 4.3725
2020-05-01 2020-03-31 13F AbbVie common stock 00287Y109 117,569 -1,397 -1.17 8,958 -14.95 4.0039
2020-02-05 2019-12-31 13F AbbVie common stock 00287Y109 118,966 3,199 2.76 10,533 20.16 3.6704
2019-11-05 2019-09-30 13F AbbVie common stock 00287Y109 115,767 2,353 2.07 8,766 6.29 3.4381
2019-08-05 2019-06-30 13F AbbVie common stock 00287Y109 113,414 8,235 7.83 8,247 -2.70 3.2300
2019-05-07 2019-03-31 13F AbbVie common stock 00287Y109 105,179 -1,640 -1.54 8,476 -13.93 3.6271
2019-02-11 2018-12-31 13F AbbVie common stock 00287Y109 106,819 -3,614 -3.27 9,848 -5.72 4.5768
2018-11-05 2018-09-30 13F AbbVie common stock 00287Y109 110,433 -290 -0.26 10,445 1.82 4.1393
2018-08-01 2018-06-30 13F AbbVie common stock 00287Y109 110,723 -513 -0.46 10,258 -2.56 4.3609
2018-05-04 2018-03-31 13F AbbVie common stock 00287Y109 111,236 -7,009 -5.93 10,528 -7.93 4.4436
2018-02-02 2017-12-31 13F AbbVie common stock 00287Y109 118,245 -29,253 -19.83 11,435 -12.76 4.7049
2017-10-26 2017-09-30 13F AbbVie common stock 00287Y109 147,498 155 0.11 13,107 22.68 5.6200
2017-08-02 2017-06-30 13F AbbVie common stock 00287Y109 147,343 2,509 1.73 10,684 13.21 4.8717
2017-05-03 2017-03-31 13F AbbVie common stock 00287Y109 144,834 -2,085 -1.42 9,437 2.58 4.5285
2017-02-03 2016-12-31 13F AbbVie common stock 00287Y109 146,919 -4,465 -2.95 9,200 -3.64 4.5880
2016-11-04 2016-09-30 13F AbbVie common stock 00287Y109 151,384 -8,040 -5.04 9,548 -3.26 4.6448
2016-08-04 2016-06-30 13F AbbVie common stock 00287Y109 159,424 -1,100 -0.69 9,870 7.65 4.3723
2016-05-20 2016-03-31 13F/A-1 AbbVie common stock 00287Y109 160,524 5,796 3.75 9,169 0.03 4.1287
2016-02-09 2015-12-31 13F AbbVie common stock 00287Y109 154,728 -1,200 -0.77 9,166 8.04 4.5244
2015-11-09 2015-09-30 13F AbbVie common stock 00287Y109 155,928 -1,525 -0.97 8,484 -19.80 4.5429
2015-08-04 2015-06-30 13F AbbVie common stock 00287Y109 157,453 -522 -0.33 10,579 14.39 5.0517
2015-05-05 2015-03-31 13F AbbVie common stock 00287Y109 157,975 275 0.17 9,248 -10.39 4.5703
2015-02-06 2014-12-31 13F AbbVie common stock 00287Y109 157,700 -2,950 -1.84 10,320 11.22 4.9528
2014-11-10 2014-09-30 13F AbbVie common stock 00287Y109 160,650 275 0.17 9,279 2.51 4.3895
2014-09-16 2014-06-30 13F/A-1 AbbVie common stock 00287Y109 160,375 160,375 9,052 4.2600
2014-07-11 2014-06-30 13F AbbVie common stock 00287Y109 160,375 9,052
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.