Mid-America Apartment Communities, Inc.
US ˙ NYSE ˙ US59522J1034

SecurityMAA / Mid-America Apartment Communities, Inc.
InstitutionAsset Management One Co., Ltd.
Latest Disclosed Ownership225,678 shares
Latest Disclosed Value $ 27,559,797
Asset Management One Co., Ltd. reports 5.90% decrease in ownership of MAA / Mid-America Apartment Communities, Inc.

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 225,678 shares of Mid-America Apartment Communities, Inc. (US:MAA) valued at $27,559,797 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 239,831 shares of Mid-America Apartment Communities, Inc.. This represents a change in shares of -5.90% during the quarter. The current value of the position is $30,888,548 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)
2026-05-08 2026-03-31 13F MID-AMER APT CMNTYS COM 59522J103 225,678 -14,153 -5.90 27,560 -17.44 0.0813
2026-01-27 2025-12-31 13F MID-AMER APT CMNTYS COM 59522J103 239,831 -3,498 -1.44 33,379 -1.83 0.0928
2025-10-22 2025-09-30 13F MID-AMER APT CMNTYS COM 59522J103 243,329 6,140 2.59 34,000 -3.15 0.0985
2025-07-31 2025-06-30 13F MID-AMER APT CMNTYS COM 59522J103 237,189 -4,172 -1.73 35,106 -13.20 0.1101
2025-04-23 2025-03-31 13F MID-AMER APT CMNTYS COM 59522J103 241,361 2,399 1.00 40,447 10.09 0.1399
2025-01-30 2024-12-31 13F MID-AMER APT CMNTYS COM 59522J103 238,962 3,101 1.31 36,740 -1.97 0.1262
2024-10-30 2024-09-30 13F MID-AMER APT CMNTYS COM 59522J103 235,861 -4,227 -1.76 37,478 9.46 0.1334
2024-07-18 2024-06-30 13F MID-AMER APT CMNTYS COM 59522J103 240,088 -8,416 -3.39 34,239 4.71 0.1310
2024-05-02 2024-03-31 13F MID-AMER APT CMNTYS COM 59522J103 248,504 -5,256 -2.07 32,698 -5.63 0.1260
2024-01-24 2023-12-31 13F MID-AMER APT CMNTYS COM 59522J103 253,760 5,549 2.24 34,651 8.51 0.1395
2023-10-19 2023-09-30 13F MID-AMER APT CMNTYS COM 59522J103 248,211 11,184 4.72 31,932 -11.29 0.1422
2023-07-31 2023-06-30 13F MID-AMER APT CMNTYS COM 59522J103 237,027 12,479 5.56 35,995 6.13 0.1524
2023-04-25 2023-03-31 13F MID-AMER APT CMNTYS COM 59522J103 224,548 -717 -0.32 33,916 -4.55 0.1537
2023-02-06 2022-12-31 13F MID-AMER APT CMNTYS COM 59522J103 225,265 -13,487 -5.65 35,532 -4.03 0.1732
2022-11-04 2022-09-30 13F MID-AMER APT CMNTYS COM 59522J103 238,752 -7,470 -3.03 37,023 -13.91 0.1884
2022-07-29 2022-06-30 13F MID-AMER APT CMNTYS COM 59522J103 246,222 -10,780 -4.19 43,007 -20.10 0.2019
2022-05-13 2022-03-31 13F MID-AMER APT CMNTYS COM 59522J103 257,002 -15,595 -5.72 53,829 -13.51 0.2101
2022-02-09 2021-12-31 13F MID-AMER APT CMNTYS COM 59522J103 272,597 9,934 3.78 62,238 26.88 0.2168
2021-11-02 2021-09-30 13F MID-AMER APT CMNTYS COM 59522J103 262,663 -27,321 -9.42 49,052 0.44 0.1881
2021-08-03 2021-06-30 13F MID-AMER APT CMNTYS COM 59522J103 289,984 -12,461 -4.12 48,839 11.86 0.1817
2021-05-14 2021-03-31 13F MID-AMER APT CMNTYS COM 59522J103 302,445 2,822 0.94 43,660 17.26 0.1734
2021-02-12 2020-12-31 13F MID-AMER APT CMNTYS COM 59522J103 299,623 237 0.08 37,232 7.26 0.1533
2020-11-13 2020-09-30 13F MID-AMER APT CMNTYS COM 59522J103 299,386 4,724 1.60 34,712 2.74 0.1596
2020-08-14 2020-06-30 13F MID-AMER APT CMNTYS COM 59522J103 294,662 11,075 3.91 33,787 15.63 0.1662
2020-05-14 2020-03-31 13F MID AMER APT CMNTYS COM 59522J103 283,587 -17,157 -5.70 29,219 -26.32 0.1706
2020-02-14 2019-12-31 13F MID AMER APT CMNTYS COM 59522J103 300,744 -3,544 -1.16 39,656 0.24 0.1787
2019-11-14 2019-09-30 13F MID AMER APT CMNTYS COM 59522J103 304,288 2,289 0.76 39,561 11.24 0.1906
2019-08-14 2019-06-30 13F MID AMER APT CMNTYS COM 59522J103 301,999 5,916 2.00 35,565 9.87 0.1747
2019-05-15 2019-03-31 13F MID AMER APT CMNTYS COM 59522J103 296,083 -119,680 -28.79 32,369 -18.55 0.1750
2019-02-13 2018-12-31 13F MID AMER APT CMNTYS COM 59522J103 415,763 -896 -0.22 39,742 -4.17 0.0947
2018-11-14 2018-09-30 13F MID AMER APT CMNTYS COM 59522J103 416,659 -426 -0.10 41,470 -1.52 0.0851
2018-08-14 2018-06-30 13F MID AMER APT CMNTYS COM 59522J103 417,085 16,144 4.03 42,112 15.12 0.0920
2018-05-14 2018-03-31 13F MID AMER APT CMNTYS COM 59522J103 400,941 -7,133 -1.75 36,582 -10.85 0.0824
2018-02-14 2017-12-31 13F MID AMER APT CMNTYS COM 59522J103 408,074 -2,624 -0.64 41,036 -6.09 0.0905
2017-11-14 2017-09-30 13F MID AMER APT CMNTYS COM 59522J103 410,698 -18,747 -4.37 43,697 -3.55 0.1026
2017-08-14 2017-06-30 13F MID AMER APT CMNTYS COM 59522J103 429,445 17,155 4.16 45,304 7.98 0.1156
2017-05-11 2017-03-31 13F MID AMER APT CMNTYS COM 59522J103 412,290 -43,120 -9.47 41,955 -5.20 0.1102
2017-05-02 2016-12-31 13F/A-1 MID AMER APT CMNTYS COM 59522J103 455,410 291,470 177.79 44,255 180.81 0.1131
2017-02-13 2016-12-31 13F MID AMER APT CMNTYS COM 59522J103 455,410 44,255
2016-11-07 2016-09-30 13F MID-AMERICA APARTMENT COMM Com 59522J103 163,940 -13,601 -7.66 15,760 -15.70 0.2341
2016-08-03 2016-06-30 13F MID-AMERICA APARTMENT COMM Com 59522J103 177,541 -6,818 -3.70 18,696 -0.07 0.2805
2016-05-05 2016-03-31 13F MID-AMERICA APARTMENT COMM Com 59522J103 184,359 1,000 0.55 18,710 10.46 0.2731
2016-01-28 2015-12-31 13F MID-AMERICA APARTMENT COMM Com 59522J103 183,359 -1,531 -0.83 16,939 13.15 0.2528
2015-11-12 2015-09-30 13F MID-AMERICA APARTMENT COMM Com 59522J103 184,890 -8,998 -4.64 14,971 5.37 0.2278
2015-08-06 2015-06-30 13F MID-AMERICA APARTMENT COMM Com 59522J103 193,888 -15,651 -7.47 14,208 -12.91 0.1969
2015-05-11 2015-03-31 13F MID-AMERICA APARTMENT COMM Com 59522J103 209,539 650 0.31 16,315 2.47 0.2014
2015-02-09 2014-12-31 13F MID-AMERICA APARTMENT COMM Com 59522J103 208,889 -17,367 -7.68 15,922 6.57 0.2066
2014-11-05 2014-09-30 13F MID-AMERICA APARTMENT COMM Com 59522J103 226,256 -11,280 -4.75 14,940 -14.05 0.2063
2014-08-12 2014-06-30 13F MID-AMERICA APARTMENT COMM Com 59522J103 237,536 -9,603 -3.89 17,382 4.37 0.2595
2014-05-05 2014-03-31 13F MID-AMERICA APARTMENT COMM Com 59522J103 247,139 -6,305 -2.49 16,654 7.86 0.2624
2014-02-05 2013-12-31 13F/A-1 MID-AMERICA APARTMENT COMM COM 59522J103 253,444 94,843 59.80 15,441 54.16 0.2393
2014-01-29 2013-12-31 13F MID AMERICA COM 59522J103 253,444 15,441
2014-02-05 2013-09-30 13F/A-1 MID-AMERICA APARTMENT COMM COM 59522J103 158,601 -7,907 -4.75 10,016 -10.77 0.1507
2013-11-06 2013-09-30 13F MID AMERICA Com 59522J103 158,601 10,016
2014-02-12 2013-06-30 13F/A-1 MID-AMERICA APARTMENT COMM COM 59522J103 166,508 166,508 11,225 0.1823
2013-08-05 2013-06-30 13F MID AMERICA Com 59522J103 166,508 11,225
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.