Exelon Corporation
AT ˙ WBAG ˙ US30161N1019
39,58 € ↑1,45 (3,80%)
2026-06-05
DEL PRIS
SecurityAT:EXEC / Exelon Corporation
InstitutionChesley Taft & Associates LLC
Latest Disclosed Ownership4,343 shares
Latest Disclosed Value $ 212,882
Chesley Taft & Associates LLC ownership in EXEC / Exelon Corporation

On April 13, 2026 - Chesley Taft & Associates LLC filed a 13F-HR form disclosing ownership of 4,343 shares of Exelon Corporation (AT:EXEC) valued at $182,992 USD as of March 31, 2026. The entity filed a previous 13F-HR on October 13, 2022 disclosing 0 shares of Exelon Corporation. The current value of the position is $171,874 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)
2026-04-13 2026-03-31 13F EXELON COM 30161N101 4,343 4,343 213 0.0060
2022-10-13 2022-09-30 13F Exelon COM 30161N101 0 -4,771 -100.00 0 -100.00
2022-07-07 2022-06-30 13F Exelon COM 30161N101 4,771 -3 -0.06 216 -5.68 0.0147
2022-04-14 2022-03-31 13F Exelon COM 30161N101 4,774 17 0.36 229 -16.73 0.0134
2022-01-05 2021-12-31 13F Exelon COM 30161N101 4,757 -23 -0.48 275 19.05 0.0142
2021-10-05 2021-09-30 13F Exelon COM 30161N101 4,780 4,780 231 0.0132
2020-04-15 2020-03-31 13F Exelon COM 30161N101 0 -4,618 -100.00 0 -100.00
2020-01-10 2019-12-31 13F Exelon COM 30161N101 4,618 -268 -5.49 211 -10.59 0.0152
2019-10-07 2019-09-30 13F Exelon COM 30161N101 4,886 43 0.89 236 1.72 0.0183
2019-07-10 2019-06-30 13F Exelon COM 30161N101 4,843 22 0.46 232 -4.13 0.0181
2019-04-05 2019-03-31 13F Exelon COM 30161N101 4,821 -97 -1.97 242 9.01 0.0201
2019-01-07 2018-12-31 13F Exelon COM 30161N101 4,918 -578 -10.52 222 -7.50 0.0214
2018-10-12 2018-09-30 13F Exelon COM 30161N101 5,496 28 0.51 240 3.00 0.0191
2018-07-12 2018-06-30 13F Exelon COM 30161N101 5,468 -48 -0.87 233 8.37 0.0200
2018-04-10 2018-03-31 13F Exelon COM 30161N101 5,516 33 0.60 215 -0.46 0.0191
2018-01-10 2017-12-31 13F Exelon COM 30161N101 5,483 -467 -7.85 216 -3.57 0.0183
2017-10-13 2017-09-30 13F Exelon COM 30161N101 5,950 35 0.59 224 5.16 0.0194
2017-07-13 2017-06-30 13F Exelon COM 30161N101 5,915 35 0.60 213 0.47 0.0192
2017-04-10 2017-03-31 13F Exelon COM 30161N101 5,880 37 0.63 212 2.42 0.0200
2017-01-11 2016-12-31 13F Exelon COM 30161N101 5,843 -534 -8.37 207 -2.36 0.0205
2016-10-17 2016-09-30 13F Exelon COM 30161N101 6,377 43 0.68 212 -7.83 0.0214
2016-07-21 2016-06-30 13F Exelon COM 30161N101 6,334 -46 -0.72 230 0.44 0.0236
2016-04-26 2016-03-31 13F Exelon COM 30161N101 6,380 6,380 0.00 229 0.0241
2016-02-09 2015-12-31 13F Exelon COM 30161N101 0 0 0 0.0000
2015-10-29 2015-09-30 13F Exelon COM 30161N101 0 -6,613 -100.00 0 -100.00
2015-07-07 2015-06-30 13F Exelon COM 30161N101 6,613 42 0.64 208 -5.88 0.0212
2015-04-09 2015-03-31 13F Exelon COM 30161N101 6,571 -380 -5.47 221 -14.34 0.0227
2015-01-12 2014-12-31 13F Exelon COM 30161N101 6,951 -389 -5.30 258 3.20 0.0261
2014-10-02 2014-09-30 13F Exelon COM 30161N101 7,340 46 0.63 250 -6.02 0.0262
2014-07-17 2014-06-30 13F Exelon COM 30161N101 7,294 41 0.57 266 9.47 0.0275
2014-04-11 2014-03-31 13F Exelon COM 30161N101 7,253 7,253 3.08 243 11.98 0.0260
2013-10-25 2013-09-30 13F Exelon COM 30161N101 0 -7,036 -100.00 0 -100.00
2013-07-22 2013-06-30 13F Exelon COM 30161N101 7,036 7,036 217 0.0251
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.