MGIC Investment Corporation
MX ˙ BMV ˙ US5528481030
SecurityMX:MTG / MGIC Investment Corporation
InstitutionRhumbline Advisers
Latest Disclosed Ownership713,746 shares
Latest Disclosed Value $ 18,735,790
Rhumbline Advisers reports 1.00% decrease in ownership of MTG / MGIC Investment Corporation

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 713,746 shares of MGIC Investment Corporation (MX:MTG) valued at $18,735,790 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 720,946 shares of MGIC Investment Corporation. This represents a change in shares of -1.00% 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 MGIC INVT CORP WIS COM COM 552848103 713,746 -7,200 -1.00 18,736 -11.06 0.0160
2026-02-13 2025-12-31 13F MGIC INVT CORP WIS COM COM 552848103 720,946 -37,143 -4.90 21,066 -2.05 0.0170
2025-11-06 2025-09-30 13F MGIC INVT CORP WIS COM COM 552848103 758,089 -41,630 -5.21 21,507 -3.40 0.0173
2025-08-12 2025-06-30 13F MGIC INVT CORP WIS COM COM 552848103 799,719 -23,152 -2.81 22,264 9.19 0.0191
2025-05-29 2025-03-31 13F/A-1 MGIC INVT CORP WIS COM COM 552848103 822,871 59,960 7.86 20,391 12.73 0.0191
2025-04-08 2025-03-31 13F MGIC INVT CORP WIS COM COM 552848103 822,871 59,960 20,391 0.0191
2025-05-29 2024-12-31 13F/A-1 MGIC INVT CORP WIS COM COM 552848103 762,911 -12,575 -1.62 18,089 -8.89 0.0162
2025-01-30 2024-12-31 13F MGIC INVT CORP WIS COM COM 552848103 762,911 -12,575 18,089 0.0162
2024-11-12 2024-09-30 13F MGIC INVT CORP WIS COM COM 552848103 775,486 -4,894 -0.63 19,852 18.05 0.0179
2024-08-01 2024-06-30 13F MGIC INVT CORP WIS COM COM 552848103 780,380 -18,258 -2.29 16,817 -5.82 0.0158
2024-05-09 2024-03-31 13F MGIC INVT CORP WIS COM COM 552848103 798,638 -43,893 -5.21 17,857 9.88 0.0171
2024-02-08 2023-12-31 13F MGIC INVT CORP WIS COM COM 552848103 842,531 -49,212 -5.52 16,252 9.20 0.0170
2023-11-09 2023-09-30 13F MGIC INVT CORP WIS COM COM 552848103 891,743 -34,151 -3.69 14,883 1.81 0.0173
2023-08-08 2023-06-30 13F MGIC INVT CORP WIS COM COM 552848103 925,894 12,056 1.32 14,620 121,725.00 0.0164
2023-05-11 2023-03-31 13F MGIC INVT CORP WIS COM COM 552848103 913,838 -20,330 -2.18 12 -99.90 0.0151
2023-02-14 2022-12-31 13F MGIC INVT CORP WIS COM COM 552848103 934,168 17,869 1.95 12,144 3.38 0.0163
2022-11-10 2022-09-30 13F MGIC INVT CORP WIS COM COM 552848103 916,299 8,065 0.89 11,747 2.65 0.0175
2022-08-11 2022-06-30 13F MGIC INVT CORP WIS COM COM 552848103 908,234 37,970 4.36 11,444 -2.95 0.0167
2022-05-12 2022-03-31 13F MGIC INVT CORP WIS COM COM 552848103 870,264 -26,701 -2.98 11,792 -8.83 0.0152
2022-02-10 2021-12-31 13F MGIC INVT CORP WIS COM COM 552848103 896,965 -9,727 -1.07 12,934 -4.64 0.0159
2021-11-12 2021-09-30 13F MGIC INVT CORP WIS COM COM 552848103 906,692 -32,122 -3.42 13,564 6.23 0.0184
2021-08-05 2021-06-30 13F MGIC INVT CORP WIS COM COM 552848103 938,814 -17,648 -1.85 12,768 -3.62 0.0168
2021-05-06 2021-03-31 13F MGIC INVT CORP WIS COM COM 552848103 956,462 -3,589 -0.37 13,247 9.94 0.0180
2021-02-10 2020-12-31 13F MGIC INVT CORP WIS COM COM 552848103 960,051 577,391 150.89 12,049 255.43 0.0166
2020-11-12 2020-09-30 13F MGIC INVT CORP WIS COM COM 552848103 382,660 -21,729 -5.37 3,390 2.36 0.0053
2020-08-13 2020-06-30 13F MGIC INVT CORP WIS COM COM 552848103 404,389 11,013 2.80 3,312 32.59 0.0055
2020-05-06 2020-03-31 13F MGIC INVT CORP WIS COM COM 552848103 393,376 78,719 25.02 2,498 -43.98 0.0052
2020-02-05 2019-12-31 13F MGIC INVT CORP WIS COM COM 552848103 314,657 968 0.31 4,459 13.00 0.0075
2019-10-23 2019-09-30 13F MGIC INVT CORP WIS COM COM 552848103 313,689 850 0.27 3,946 -4.01 0.0072
2019-08-14 2019-06-30 13F MGIC INVT CORP WIS COM COM 552848103 312,839 -255,234 -44.93 4,111 -45.14 0.0077
2019-05-01 2019-03-31 13F MGIC INVT CORP WIS COM COM 552848103 568,073 -3,690 -0.65 7,493 25.28 0.0145
2019-01-31 2018-12-31 13F MGIC INVT CORP WIS COM COM 552848103 571,763 155,294 37.29 5,981 7.90 0.0130
2018-11-07 2018-09-30 13F MGIC INVT CORP WIS COM COM 552848103 416,469 -4,863 -1.15 5,543 22.71 0.0107
2018-08-06 2018-06-30 13F MGIC INVT CORP WIS COM COM 552848103 421,332 3,752 0.90 4,517 -16.80 0.0091
2018-05-02 2018-03-31 13F MGIC INVT CORP WIS COM COM 552848103 417,580 -15,734 -3.63 5,429 -11.20 0.0113
2018-02-09 2017-12-31 13F MGIC INVT CORP WIS COM COM 552848103 433,314 -63,819 -12.84 6,114 -1.85 0.0124
2017-11-06 2017-09-30 13F MGIC INVT CORP WIS COM COM 552848103 497,133 1,050 0.21 6,229 12.11 0.0135
2017-08-02 2017-06-30 13F MGIC INVT CORP WIS COM COM 552848103 496,083 30,678 6.59 5,556 17.84 0.0127
2017-05-02 2017-03-31 13F MGIC INVT CORP WIS COM COM 552848103 465,405 20,169 4.53 4,715 3.92 0.0110
2017-01-27 2016-12-31 13F MGIC INVT CORP WIS COM COM 552848103 445,236 -17,643 -3.81 4,537 22.52 0.0115
2016-11-08 2016-09-30 13F MGIC INVT CORP WIS COM COM 552848103 462,879 9,488 2.09 3,703 37.25 0.0102
2016-08-11 2016-06-30 13F MGIC INVT CORP WIS COM COM 552848103 453,391 -17,358 -3.69 2,698 -25.28 0.0080
2016-05-02 2016-03-31 13F MGIC INVESTMENT CORP COMMON ST COM 552848103 470,749 28,534 6.45 3,611 -7.53 0.0112
2016-02-03 2015-12-31 13F MGIC INVESTMENT CORP COMMON ST COM 552848103 442,215 18,270 4.31 3,905 -0.53 0.0126
2015-11-04 2015-09-30 13F MGIC INVESTMENT CORP COMMON ST COM 552848103 423,945 20,014 4.95 3,926 -14.60 0.0134
2015-08-04 2015-06-30 13F MGIC INVESTMENT CORP COMMON ST COM 552848103 403,931 -19,320 -4.56 4,597 12.78 0.0147
2015-05-12 2015-03-31 13F MGIC INVESTMENT CORP COMMON ST COM 552848103 423,251 25,460 6.40 4,076 9.95 0.0118
2015-02-06 2014-12-31 13F MGIC INVESTMENT CORP COMMON ST COM 552848103 397,791 4,373 1.11 3,707 20.63 0.0108
2014-11-12 2014-09-30 13F MGIC INVESTMENT CORP COMMON ST COM 552848103 393,418 2,460 0.63 3,073 -14.92 0.0092
2014-08-06 2014-06-30 13F MGIC INVESTMENT CORP COMMON ST COM 552848103 390,958 18,792 5.05 3,612 13.91 0.0106
2014-05-06 2014-03-31 13F MGIC INVESTMENT CORP COMMON ST COM 552848103 372,166 -17,390 -4.46 3,171 -3.56 0.0094
2014-02-03 2013-12-31 13F MGIC INVESTMENT CORP COMMON ST COM 552848103 389,556 -12,840 -3.19 3,288 12.26 0.0097
2013-11-05 2013-09-30 13F MGIC INVESTMENT CORP COMMON ST COM 552848103 402,396 3,458 0.87 2,929 20.93 0.0091
2013-08-07 2013-06-30 13F MGIC INVESTMENT CORP COMMON ST COM 552848103 398,938 398,938 2,422 0.0078
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.