CDW Corporation
MX ˙ BMV ˙ US12514G1085
SecurityMX:CDW / CDW Corporation
InstitutionRhumbline Advisers
Latest Disclosed Ownership266,348 shares
Latest Disclosed Value $ 32,233,320
Rhumbline Advisers reports 6.11% increase in ownership of CDW / CDW Corporation

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 266,348 shares of CDW Corporation (MX:CDW) valued at $32,233,320 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 251,010 shares of CDW Corporation. This represents a change in shares of 6.11% 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)
2026-05-12 2026-03-31 13F CDW CORP COM COM 12514G108 266,348 15,338 6.11 32,233 -5.72 0.0276
2026-02-13 2025-12-31 13F CDW CORP COM COM 12514G108 251,010 -2,942 -1.16 34,187 -15.48 0.0276
2025-11-06 2025-09-30 13F CDW CORP COM COM 12514G108 253,952 -3,600 -1.40 40,449 -12.06 0.0325
2025-08-12 2025-06-30 13F CDW CORP COM COM 12514G108 257,552 -15,528 -5.69 45,996 5.10 0.0394
2025-05-29 2025-03-31 13F/A-1 CDW CORP COM COM 12514G108 273,080 15,590 6.05 43,764 -2.34 0.0409
2025-04-08 2025-03-31 13F CDW CORP COM COM 12514G108 273,080 15,590 43,764 0.0409
2025-05-29 2024-12-31 13F/A-1 CDW CORP COM COM 12514G108 257,490 -8,008 -3.02 44,813 -25.41 0.0401
2025-01-30 2024-12-31 13F CDW CORP COM COM 12514G108 257,490 -8,008 44,813 0.0401
2024-11-12 2024-09-30 13F CDW CORP COM COM 12514G108 265,498 -25,523 -8.77 60,082 -7.77 0.0542
2024-08-01 2024-06-30 13F CDW CORP COM COM 12514G108 291,021 -5,754 -1.94 65,142 -14.18 0.0612
2024-05-09 2024-03-31 13F CDW CORP COM COM 12514G108 296,775 24,236 8.89 75,909 22.53 0.0729
2024-02-08 2023-12-31 13F CDW CORP COM COM 12514G108 272,539 -2,953 -1.07 61,953 11.46 0.0649
2023-11-09 2023-09-30 13F CDW CORP COM COM 12514G108 275,492 -1,845 -0.67 55,583 9.22 0.0645
2023-08-08 2023-06-30 13F CDW CORP COM COM 12514G108 277,337 5,800 2.14 50,891 97,767.31 0.0570
2023-05-11 2023-03-31 13F CDW CORP COM COM 12514G108 271,537 -8,221 -2.94 53 -99.90 0.0653
2023-02-14 2022-12-31 13F CDW CORP COM COM 12514G108 279,758 9,208 3.40 49,959 18.31 0.0672
2022-11-10 2022-09-30 13F CDW CORP COM COM 12514G108 270,550 5,387 2.03 42,227 1.07 0.0629
2022-08-11 2022-06-30 13F CDW CORP COM COM 12514G108 265,163 18,537 7.52 41,779 -5.30 0.0610
2022-05-12 2022-03-31 13F CDW CORP COM COM 12514G108 246,626 -7,978 -3.13 44,119 -15.38 0.0568
2022-02-10 2021-12-31 13F CDW CORP COM COM 12514G108 254,604 2,111 0.84 52,138 13.44 0.0639
2021-11-12 2021-09-30 13F CDW CORP COM COM 12514G108 252,493 25,079 11.03 45,959 15.71 0.0622
2021-08-05 2021-06-30 13F CDW CORP COM COM 12514G108 227,414 -14,432 -5.97 39,718 -0.92 0.0521
2021-05-06 2021-03-31 13F CDW CORP COM COM 12514G108 241,846 -35,323 -12.74 40,086 9.74 0.0545
2021-02-10 2020-12-31 13F CDW CORP COM COM 12514G108 277,169 -5,107 -1.81 36,528 8.26 0.0504
2020-11-12 2020-09-30 13F CDW CORP COM COM 12514G108 282,276 -31,129 -9.93 33,740 -7.34 0.0529
2020-08-13 2020-06-30 13F CDW CORP COM COM 12514G108 313,405 2,262 0.73 36,411 25.47 0.0608
2020-05-06 2020-03-31 13F CDW CORP COM COM 12514G108 311,143 44,475 16.68 29,020 -23.81 0.0608
2020-02-05 2019-12-31 13F CDW CORP COM COM 12514G108 266,668 16,159 6.45 38,091 23.38 0.0637
2019-10-23 2019-09-30 13F CDW CORP COM COM 12514G108 250,509 86,525 52.76 30,873 69.61 0.0564
2019-08-14 2019-06-30 13F CDW CORP COM COM 12514G108 163,984 3,877 2.42 18,202 17.97 0.0342
2019-05-01 2019-03-31 13F CDW CORP COM COM 12514G108 160,107 -1,320 -0.82 15,430 17.93 0.0299
2019-01-31 2018-12-31 13F CDW CORP COM COM 12514G108 161,427 -10,338 -6.02 13,084 -14.33 0.0285
2018-11-07 2018-09-30 13F CDW CORP COM COM 12514G108 171,765 -3,114 -1.78 15,273 8.10 0.0295
2018-08-06 2018-06-30 13F CDW CORP COM COM 12514G108 174,879 8,389 5.04 14,128 20.69 0.0285
2018-05-02 2018-03-31 13F CDW CORP COM COM 12514G108 166,490 -6,435 -3.72 11,706 -2.59 0.0244
2018-02-09 2017-12-31 13F CDW CORP COM COM 12514G108 172,925 -3,588 -2.03 12,017 3.15 0.0244
2017-11-06 2017-09-30 13F CDW CORP COM COM 12514G108 176,513 -6,101 -3.34 11,650 2.02 0.0253
2017-08-02 2017-06-30 13F CDW CORP COM COM 12514G108 182,614 -7,483 -3.94 11,419 4.09 0.0261
2017-05-02 2017-03-31 13F CDW CORP COM COM 12514G108 190,097 14,328 8.15 10,970 19.81 0.0256
2017-01-27 2016-12-31 13F CDW CORP COM COM 12514G108 175,769 16,109 10.09 9,156 25.41 0.0232
2016-11-08 2016-09-30 13F CDW CORP COM COM 12514G108 159,660 12,949 8.83 7,301 24.17 0.0201
2016-08-11 2016-06-30 13F CDW CORP COM COM 12514G108 146,711 33,840 29.98 5,880 25.53 0.0174
2016-05-02 2016-03-31 13F CDW COM 12514G108 112,871 -2,430 -2.11 4,684 -3.36 0.0145
2016-02-03 2015-12-31 13F CDW COM 12514G108 115,301 2,645 2.35 4,847 5.30 0.0156
2015-11-04 2015-09-30 13F CDW COM 12514G108 112,656 6,139 5.76 4,603 26.08 0.0157
2015-08-04 2015-06-30 13F CDW COM 12514G108 106,517 39,463 58.85 3,651 46.22 0.0116
2015-05-12 2015-03-31 13F CDW COM 12514G108 67,054 1,890 2.90 2,497 8.94 0.0072
2015-02-06 2014-12-31 13F CDW COM 12514G108 65,164 430 0.66 2,292 14.03 0.0067
2014-11-12 2014-09-30 13F CDW COM 12514G108 64,734 137 0.21 2,010 -2.38 0.0060
2014-08-06 2014-06-30 13F CDW COM 12514G108 64,597 53,117 462.69 2,059 553.65 0.0060
2014-05-06 2014-03-31 13F CDW COM 12514G108 11,480 390 3.52 315 21.62 0.0009
2014-02-03 2013-12-31 13F CDW COM 12514G108 11,090 11,090 259 0.0008
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.