Aflac Incorporated
MX ˙ BMV ˙ US0010551028
SecurityMX:AFL / Aflac Incorporated
InstitutionRobeco Institutional Asset Management B.V.
Latest Disclosed Ownership1,369,412 shares
Latest Disclosed Value $ 150,238,188
Robeco Institutional Asset Management B.V. reports 7.89% decrease in ownership of AFL / Aflac Incorporated

On April 21, 2026 - Robeco Institutional Asset Management B.V. filed a 13F-HR form disclosing ownership of 1,369,412 shares of Aflac Incorporated (MX:AFL) valued at $150,238,188 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 1,486,701 shares of Aflac Incorporated. This represents a change in shares of -7.89% 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)
2026-04-21 2026-03-31 13F AFLAC COM 001055102 1,369,412 -117,289 -7.89 150,238 -8.36 0.2141
2026-01-23 2025-12-31 13F AFLAC COM 001055102 1,486,701 -91,509 -5.80 163,939 -7.00 0.2335
2025-10-22 2025-09-30 13F AFLAC COM 001055102 1,578,210 -76,592 -4.63 176,286 1.01 0.2554
2025-07-18 2025-06-30 13F AFLAC COM 001055102 1,654,802 343,881 26.23 174,515 19.73 0.2822
2025-04-23 2025-03-31 13F AFLAC COM 001055102 1,310,921 -11,640 -0.88 145,761 6.55 0.2832
2025-01-23 2024-12-31 13F AFLAC COM 001055102 1,322,561 -71,202 -5.11 136,806 -12.20 0.2593
2024-10-29 2024-09-30 13F AFLAC COM 001055102 1,393,763 -52,539 -3.63 155,823 20.63 0.3095
2024-07-23 2024-06-30 13F AFLAC COM 001055102 1,446,302 -523,461 -26.57 129,169 -23.62 0.2779
2024-04-24 2024-03-31 13F AFLAC COM 001055102 1,969,763 -588,602 -23.01 169,124 -19.87 0.3675
2024-02-14 2023-12-31 13F/A-1 AFLAC COM 001055102 2,558,365 -151,490 -5.59 211,065 1.48 0.5117
2024-02-08 2023-12-31 13F AFLAC COM 001055102 1,265,852 -1,444,003 2,558 0.4792
2023-10-24 2023-09-30 13F AFLAC COM 001055102 2,709,855 -93,941 -3.35 207,981 6.27 0.5558
2023-07-24 2023-06-30 13F AFLAC COM 001055102 2,803,796 89,600 3.30 195,705 11.75 0.5131
2023-05-04 2023-03-31 13F AFLAC COM 001055102 2,714,196 909,622 50.41 175,120 34.89 0.4774
2023-02-07 2022-12-31 13F AFLAC COM 001055102 1,804,574 12,186 0.68 129,821 28.87 0.3741
2022-12-01 2022-09-30 13F/A-1 AFLAC COM 001055102 1,792,388 661,438 58.49 100,737 60.98 0.3255
2022-10-27 2022-09-30 13F AFLAC COM 001055102 1,792,388 661,438 100,737 0.3212
2022-12-01 2022-06-30 13F/A-1 AFLAC COM 001055102 1,130,950 -85,568 -7.03 62,576 -20.12 0.1944
2022-07-27 2022-06-30 13F AFLAC COM 001055102 1,130,950 -85,568 62,576 0.1917
2022-12-01 2022-03-31 13F/A-1 AFLAC COM 001055102 1,216,518 -18,713 -1.51 78,335 8.61 0.1845
2022-04-26 2022-03-31 13F AFLAC COM 001055102 1,216,518 -18,713 78,335 0.1823
2022-12-01 2021-12-31 13F/A-1 AFLAC COM 001055102 1,235,231 -59,075 -4.56 72,124 6.90 0.1535
2022-01-31 2021-12-31 13F AFLAC COM 001055102 1,235,231 -59,075 72,124 0.1516
2022-12-01 2021-09-30 13F/A-1 AFLAC COM 001055102 1,294,306 65,368 5.32 67,471 2.31 0.1496
2021-10-20 2021-09-30 13F AFLAC COM 001055102 1,294,306 65,368 67,471 0.1477
2022-12-01 2021-06-30 13F/A-1 AFLAC COM 001055102 1,228,938 522,668 74.00 65,945 82.44 0.1462
2021-07-28 2021-06-30 13F AFLAC COM 001055102 1,228,938 522,668 65,945 0.1442
2022-12-01 2021-03-31 13F/A-1 AFLAC COM 001055102 706,270 271,534 62.46 36,147 86.99 0.0891
2021-04-23 2021-03-31 13F AFLAC COM 001055102 706,270 271,534 36,147 0.0878
2022-12-01 2020-12-31 13F/A-1 AFLAC COM 001055102 434,736 261,532 151.00 19,331 207.08 0.0508
2021-01-28 2020-12-31 13F AFLAC COM 001055102 434,736 261,532 19,331 0.0502
2021-01-19 2020-09-30 13F/A-1 AFLAC COM 001055102 173,204 -111,801 -39.23 6,295 -38.69 0.0195
2020-10-29 2020-09-30 13F AFLAC COM 001055102 173,204 -111,801 6,295 19,441.0088
2021-01-19 2020-06-30 13F/A-1 AFLAC COM 001055102 285,005 -1,614,545 -85.00 10,268 -84.21 0.0349
2020-07-20 2020-06-30 13F AFLAC COM 001055102 285,005 -1,614,545 10,268 34,841.1555
2021-01-19 2020-03-31 13F/A-1 AFLAC COM 001055102 1,899,550 -1,080,762 -36.26 65,042 -58.75 0.2609
2020-04-30 2020-03-31 13F AFLAC COM 001055102 1,899,550 -1,080,762 65,042 260,703.0043
2021-01-19 2019-12-31 13F/A-1 AFLAC COM 001055102 2,980,312 -361,750 -10.82 157,660 -9.83 0.5047
2020-02-06 2019-12-31 13F AFLAC COM 001055102 2,980,312 -361,750 157,660 504,263.3860
2021-01-19 2019-09-30 13F/A-1 AFLAC COM 001055102 3,342,062 -100,934 -2.93 174,857 -7.34 0.6173
2019-10-17 2019-09-30 13F AFLAC COM 001055102 3,342,062 -100,934 174,857 616,442.8354
2021-01-19 2019-06-30 13F/A-1 AFLAC COM 001055102 3,442,996 287,347 9.11 188,709 19.60 0.6664
2019-07-19 2019-06-30 13F AFLAC COM 001055102 3,442,996 287,347 188,709 665,437.2943
2021-01-19 2019-03-31 13F/A-1 AFLAC COM 001055102 3,155,649 1,392,015 78.93 157,787 96.65 0.5802
2019-05-02 2019-03-31 13F AFLAC COM 001055102 3,155,649 1,392,015 157,787 579,337.7338
2021-01-19 2018-12-31 13F/A-1 AFLAC COM 001055102 1,763,634 902 0.05 80,237 -3.30 0.3603
2019-02-08 2018-12-31 13F AFLAC COM 001055102 1,763,634 902 80,237 359,658.3763
2021-01-19 2018-09-30 13F/A-1 AFLAC COM 001055102 1,762,732 59,907 3.52 82,973 13.27 0.3286
2018-10-25 2018-09-30 13F AFLAC COM 001055102 1,762,732 59,907 82,973
2021-01-19 2018-06-30 13F/A-1 AFLAC COM 001055102 1,702,825 133,406 8.50 73,254 6.66 0.3337
2018-08-03 2018-06-30 13F AFLAC COM 001055102 1,702,825 133,406 73,254
2021-01-19 2018-03-31 13F/A-1 AFLAC COM 001055102 1,569,419 1,186,947 310.34 68,677 104.55 0.3222
2018-05-07 2018-03-31 13F AFLAC COM 001055102 1,569,419 1,186,947 68,677 321,170.2030
2021-01-19 2017-12-31 13F/A-1 AFLAC COM 001055102 382,472 103,078 36.89 33,574 47.65 0.1740
2018-01-25 2017-12-31 13F AFLAC COM 001055102 382,472 103,078 33,574
2021-01-19 2017-09-30 13F/A-1 AFLAC COM 001055102 279,394 11,873 4.44 22,739 9.43 0.1412
2017-10-17 2017-09-30 13F AFLAC COM 001055102 279,394 11,873 22,739 140,876.0821
2021-01-19 2017-06-30 13F/A-1 AFLAC COM 001055102 267,521 27,578 11.49 20,780 19.60 0.1338
2017-08-07 2017-06-30 13F AFLAC COM 001055102 267,521 27,578 20,780 135,294.5355
2021-01-19 2017-03-31 13F/A-1 AFLAC COM 001055102 239,943 -92,318 -27.78 17,374 -24.87 0.1157
2017-05-15 2017-03-31 13F AFLAC COM 001055102 239,943 -92,318 17,374 115,397.0588
2017-02-09 2016-12-31 13F AFLAC COM 001055102 332,261 -6,830 -2.01 23,125 -5.11 0.1809
2016-11-07 2016-09-30 13F AFLAC COM 001055102 339,091 110,113 48.09 24,370 47.50 0.1801
2016-07-22 2016-06-30 13F AFLAC COM 001055102 228,978 150,327 191.13 16,522 232.57 0.1253
2016-05-16 2016-03-31 13F AFLAC COM 001055102 78,651 0 0.00 4,968 5.43 0.0399
2016-02-08 2015-12-31 13F AFLAC COM 001055102 78,651 50,766 182.05 4,712 190.68 0.0403
2015-11-12 2015-09-30 13F AFLAC COM 001055102 27,885 0 0.00 1,621 -6.57 0.0123
2015-08-17 2015-06-30 13F AFLAC COM 001055102 27,885 15,181 119.50 1,735 113.41 0.0132
2015-04-24 2015-03-31 13F AFLAC COM 001055102 12,704 -3,298 -20.61 813 -16.79 0.0061
2015-02-12 2014-12-31 13F AFLAC COM 001055102 16,002 -7,217 -31.08 977 -27.84 0.0070
2014-11-10 2014-09-30 13F AFLAC COM 001055102 23,219 -1,608 -6.48 1,354 -12.36 0.0097
2014-08-13 2014-06-30 13F AFLAC COM 001055102 24,827 15,812 175.40 1,545 172.01 0.0111
2014-05-07 2014-03-31 13F AFLAC COM 001055102 9,015 578 6.85 568 0.71 0.0044
2014-02-04 2013-12-31 13F AFLAC COM 001055102 8,437 0 0.00 564 7.84 0.0047
2013-11-12 2013-09-30 13F AFLAC COM 001055102 8,437 0 0.00 523 6.73 0.0051
2013-08-27 2013-06-30 13F Aflac COM 001055102 8,437 8,437 490 0.0050
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.