Exelon Corporation
AT ˙ WBAG ˙ US30161N1019
39,58 € ↑1,45 (3,80%)
2026-06-05
DEL PRIS
SecurityAT:EXEC / Exelon Corporation
InstitutionMassachusetts Financial Services Co /ma/
Latest Disclosed Ownership1,043,562 shares
Latest Disclosed Value $ 51,820,617
Massachusetts Financial Services Co /ma/ reports 92.64% decrease in ownership of EXEC / Exelon Corporation

On May 14, 2026 - Massachusetts Financial Services Co /ma/ filed a 13F-HR form disclosing ownership of 1,043,562 shares of Exelon Corporation (AT:EXEC) valued at $43,970,485 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 22, 2026 disclosing 14,169,338 shares of Exelon Corporation. This represents a change in shares of -92.64% during the quarter. The current value of the position is $41,298,966 USD.

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)
2026-05-14 2026-03-31 13F EXELON COM 30161N101 1,043,562 -13,125,776 -92.64 51,821 -91.61 0.0042
2026-01-22 2025-12-31 13F EXELON COM 30161N101 14,169,338 -333,385 -2.30 617,641 -5.38 0.1992
2025-10-29 2025-09-30 13F EXELON COM 30161N101 14,502,723 -740,042 -4.86 652,768 -1.37 0.2022
2025-08-08 2025-06-30 13F EXELON COM 30161N101 15,242,765 -594,408 -3.75 661,841 -9.31 0.2101
2025-05-02 2025-03-31 13F EXELON COM 30161N101 15,837,173 106,917 0.68 729,777 23.26 0.2426
2025-02-12 2024-12-31 13F EXELON COM 30161N101 15,730,256 -1,056,525 -6.29 592,087 -13.02 0.1869
2024-11-12 2024-09-30 13F EXELON COM 30161N101 16,786,781 -1,244,952 -6.90 680,704 9.07 0.2033
2024-08-09 2024-06-30 13F EXELON COM 30161N101 18,031,733 -351,178 -1.91 624,078 -9.64 0.1918
2024-05-14 2024-03-31 13F EXELON COM 30161N101 18,382,911 -1,014,998 -5.23 690,646 -0.82 0.2063
2024-02-08 2023-12-31 13F EXELON COM 30161N101 19,397,909 -227,683 -1.16 696,385 -6.10 0.2249
2023-11-08 2023-09-30 13F EXELON COM 30161N101 19,625,592 -224,328 -1.13 741,651 -8.29 0.2597
2023-08-09 2023-06-30 13F EXELON COM 30161N101 19,849,920 3,142,216 18.81 808,686 15.55 0.2655
2023-05-10 2023-03-31 13F EXELON COM 30161N101 16,707,704 7,086,760 73.66 699,886 68.28 0.2395
2023-02-13 2022-12-31 13F EXELON COM 30161N101 9,620,944 2,478,296 34.70 415,913 55.44 0.1452
2022-11-09 2022-09-30 13F EXELON COM 30161N101 7,142,648 -58,350 -0.81 267,563 -18.01 0.1000
2022-08-09 2022-06-30 13F EXELON COM 30161N101 7,200,998 -846,933 -10.52 326,348 -14.86 0.1125
2022-05-11 2022-03-31 13F EXELON COM 30161N101 8,047,931 132,841 1.68 383,322 -16.15 0.1136
2022-02-10 2021-12-31 13F EXELON COM 30161N101 7,915,090 90,735 1.16 457,176 20.87 0.1252
2021-11-10 2021-09-30 13F EXELON COM 30161N101 7,824,355 -79,045 -1.00 378,229 8.00 0.1107
2021-08-13 2021-06-30 13F EXELON COM 30161N101 7,903,400 -358,064 -4.33 350,200 -3.09 0.1020
2021-05-13 2021-03-31 13F EXELON COM 30161N101 8,261,464 -430,985 -4.96 361,357 98,631.42 0.1111
2021-05-12 2020-12-31 13F/A-1 EXELON COM 30161N101 8,692,449 -158,968 -1.80 367 15.82 0.1178
2021-02-12 2020-12-31 13F EXELON COM 30161N101 8,692,449 -158,968 367 0.1178
2020-11-12 2020-09-30 13F EXELON COM 30161N101 8,851,417 -28,399 -0.32 317 -1.86 0.1147
2020-11-20 2020-06-30 13F/A-1 EXELON COM 30161N101 8,879,816 -204,255 -2.25 322 -99.90 0.1271
2020-08-11 2020-06-30 13F EXELON COM 30161N101 8,879,816 -204,255 322,248 127,165.2650
2020-11-20 2020-03-31 13F/A-1 EXELON COM 30161N101 9,084,071 -717,723 -7.32 334,384 -25.17 0.1594
2020-05-14 2020-03-31 13F EXELON COM 30161N101 9,084,071 -717,723 334,384 159,528.2714
2020-11-25 2019-12-31 13F/A-1 EXELON COM 30161N101 9,801,794 -376,244 -3.70 446,863 90,910.79 0.1680
2020-02-13 2019-12-31 13F EXELON COM 30161N101 9,801,794 -376,244 446,863 168,088.0372
2020-11-20 2019-09-30 13F/A-1 EXELON COM 30161N101 10,178,038 233,034 2.34 492 -99.90 0.1974
2019-11-05 2019-09-30 13F EXELON COM 30161N101 10,178,038 233,034 491,701 197,557.5857
2019-08-14 2019-06-30 13F EXELON COM 30161N101 9,945,004 -1,245,231 -11.13 476,765 -15.01 0.1943
2019-05-13 2019-03-31 13F EXELON COM 30161N101 11,190,235 -369,468 -3.20 560,968 7.60 0.2364
2019-02-08 2018-12-31 13F EXELON COM 30161N101 11,559,703 -2,411,030 -17.26 521,343 -14.53 0.2502
2018-10-25 2018-09-30 13F EXELON COM 30161N101 13,970,733 -1,693,877 -10.81 609,962 -8.59 0.2512
2018-07-30 2018-06-30 13F EXELON COM 30161N101 15,664,610 -2,622,548 -14.34 667,311 -6.46 0.2859
2018-05-04 2018-03-31 13F EXELON COM 30161N101 18,287,158 -662,565 -3.50 713,382 -4.48 0.3056
2018-02-14 2017-12-31 13F EXELON COM 30161N101 18,949,723 -811,730 -4.11 746,807 0.32 0.3130
2017-11-14 2017-09-30 13F EXELON COM 30161N101 19,761,453 -930,354 -4.50 744,414 -0.26 0.3232
2017-08-14 2017-06-30 13F EXELON COM 30161N101 20,691,807 15,216,949 277.94 746,353 176.18 0.3312
2017-05-12 2017-03-31 13F EXELON UNIT 99/99/9999 30161N127 5,474,858 -55,173 -1.00 270,239 0.95 0.1265
2017-05-12 2017-03-31 13F EXELON COM 30161N101 13,578,226 -1,035,573 488,544 0.2287
2017-05-09 2016-12-31 13F/A-1 EXELON UNIT 99/99/9999 30161N127 5,530,031 208,353 3.92 267,709 7.63 0.1309
2017-05-09 2016-12-31 13F/A-1 EXELON COM 30161N101 14,613,799 -2,657,066 518,643 0.2536
2017-02-13 2016-12-31 13F EXELON UNIT 99/99/9999 30161N127 5,530,031 208,353 267,709 131,058.4942
2017-02-13 2016-12-31 13F EXELON COM 30161N101 14,613,799 9,292,121 518,643 253,904.6897
2017-05-09 2016-09-30 13F/A-1 EXELON UNIT 99/99/9999 30161N127 5,321,678 -547,354 -9.33 248,735 -14.10 0.1211
2017-05-09 2016-09-30 13F/A-1 EXELON COM 30161N101 17,270,865 48,544 574,946 0.2800
2016-11-14 2016-09-30 13F EXELON UNIT 99/99/9999 30161N127 5,321,678 -547,354 248,735 121,204.4954
2016-11-14 2016-09-30 13F EXELON COM 30161N101 17,270,865 11,401,833 574,946 280,161.7778
2017-05-09 2016-06-30 13F/A-1 EXELON UNIT 99/99/9999 30161N127 5,869,032 64,301 1.11 289,577 1.33 0.1459
2017-05-09 2016-06-30 13F/A-1 EXELON COM 30161N101 17,222,321 1,070,084 626,203 0.3154
2016-08-12 2016-06-30 13F EXELON UNIT 99/99/9999 30161N127 5,869,032 64,301 289,577 145,954.5087
2016-08-12 2016-06-30 13F EXELON COM 30161N101 17,222,321 1,070,084 626,203 315,622.9645
2017-05-09 2016-03-31 13F/A-1 EXELON UNIT 99/99/9999 30161N127 5,804,731 491,679 9.25 285,767 32.90 0.1485
2017-05-09 2016-03-31 13F/A-1 EXELON COM 30161N101 16,152,237 -157,540 579,220 0.3009
2016-05-12 2016-03-31 13F EXELON UNIT 99/99/9999 30161N127 5,804,731 2,924,472 285,767 148,552.3884
2016-05-12 2016-03-31 13F EXELON COM 30161N101 16,152,237 10,304,502 579,220 301,100.2474
2016-02-12 2015-12-31 13F EXELON UNIT 99/99/9999 30161N127 5,313,052 1,409,223 36.10 215,019 26.18 0.1148
2016-02-12 2015-12-31 13F EXELON COM 30161N101 16,309,777 4,353,400 452,923 0.2418
2015-11-12 2015-09-30 13F EXELON UNIT 99/99/9999 30161N127 3,903,829 140,000 3.72 170,402 -0.19 0.0952
2015-11-12 2015-09-30 13F EXELON COM 30161N101 11,956,377 1,730,209 355,104 0.1984
2015-08-13 2015-06-30 13F EXELON UNIT 99/99/9999 30161N127 3,763,829 -284 -0.01 170,727 -6.77 0.0868
2015-08-13 2015-06-30 13F EXELON COM 30161N101 10,226,168 924,484 321,306 0.1634
2015-05-13 2015-03-31 13F EXELON UNIT 99/99/9999 30161N127 3,764,113 434,819 13.06 183,124 4.77 0.0927
2015-05-13 2015-03-31 13F EXELON COM 30161N101 9,301,684 1,905,022 312,630 0.1582
2015-02-13 2014-12-31 13F EXELON UNIT 99/99/9999 30161N127 3,329,294 449,035 15.59 174,788 19.46 0.0889
2015-02-13 2014-12-31 13F EXELON COM 30161N101 7,396,662 1,548,927 274,268 0.1395
2014-11-13 2014-09-30 13F EXELON UNIT 99/99/9999 30161N127 2,880,259 -3,443,421 -54.45 146,317 -36.57 0.0774
2014-11-13 2014-09-30 13F EXELON COM 30161N101 5,847,735 -475,945 199,349 0.1054
2014-08-13 2014-06-30 13F EXELON COM 30161N101 6,323,680 6,323,680 230,688 0.1206
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.