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

SecurityMAA / Mid-America Apartment Communities, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership1,772,445 shares
Latest Disclosed Value $ 216,450,376
Dimensional Fund Advisors Lp reports 3.72% increase in ownership of MAA / Mid-America Apartment Communities, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 1,772,445 shares of Mid-America Apartment Communities, Inc. (US:MAA) valued at $216,450,983 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,708,926 shares of Mid-America Apartment Communities, Inc.. This represents a change in shares of 3.72% during the quarter. The current value of the position is $243,782,085 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)
2026-05-07 2026-03-31 13F MID-AMER APT CMNTYS COM 59522J103 1,772,445 63,519 3.72 216,450 -8.82 0.0450
2026-02-12 2025-12-31 13F MID-AMER APT CMNTYS COM 59522J103 1,708,926 14,213 0.84 237,391 0.25 0.0498
2025-11-12 2025-09-30 13F MID-AMER APT CMNTYS COM 59522J103 1,694,713 9,197 0.55 236,798 -5.08 0.0508
2025-08-12 2025-06-30 13F MID-AMER APT CMNTYS COM 59522J103 1,685,516 -2,777 -0.16 249,474 -11.82 0.0578
2025-05-13 2025-03-31 13F MID-AMER APT CMNTYS COM 59522J103 1,688,293 -37,312 -2.16 282,917 6.07 0.0703
2025-02-13 2024-12-31 13F MID-AMER APT CMNTYS COM 59522J103 1,725,605 24,407 1.43 266,723 -1.33 0.0641
2024-11-07 2024-09-30 13F MID-AMER APT CMNTYS COM 59522J103 1,701,198 -15,430 -0.90 270,316 10.42 0.0656
2024-08-09 2024-06-30 13F MID-AMER APT CMNTYS COM 59522J103 1,716,628 97,672 6.03 244,803 14.92 0.0639
2024-05-10 2024-03-31 13F MID-AMER APT CMNTYS COM 59522J103 1,618,956 -37,339 -2.25 213,022 -4.35 0.0577
2024-02-07 2023-12-31 13F MID-AMER APT CMNTYS COM 59522J103 1,656,295 1,070 0.06 222,711 4.59 0.0650
2023-11-09 2023-09-30 13F MID-AMER APT CMNTYS COM 59522J103 1,655,225 5,558 0.34 212,947 -15.00 0.0698
2023-08-09 2023-06-30 13F MID-AMER APT CMNTYS COM 59522J103 1,649,667 15,538 0.95 250,520 1.50 0.0798
2023-05-12 2023-03-31 13F MID-AMER APT CMNTYS COM 59522J103 1,634,129 60,035 3.81 246,813 99,824.29 0.0831
2023-02-09 2022-12-31 13F MID-AMER APT CMNTYS COM 59522J103 1,574,094 -88,472 -5.32 247 -99.90 0.0730
2022-11-10 2022-09-30 13F MID-AMER APT CMNTYS COM 59522J103 1,662,566 -69,380 -4.01 257,813 -14.78 0.0990
2022-08-12 2022-06-30 13F MID-AMER APT CMNTYS COM 59522J103 1,731,946 -12,544 -0.72 302,513 -17.21 0.1085
2022-05-13 2022-03-31 13F MID-AMER APT CMNTYS COM 59522J103 1,744,490 -26,411 -1.49 365,393 -10.07 0.1126
2022-02-09 2021-12-31 13F MID-AMER APT CMNTYS COM 59522J103 1,770,901 -29,784 -1.65 406,313 20.82 0.1228
2021-11-12 2021-09-30 13F MID-AMER APT CMNTYS COM 59522J103 1,800,685 -13,347 -0.74 336,290 10.07 0.1083
2021-08-12 2021-06-30 13F MID-AMER APT CMNTYS COM 59522J103 1,814,032 -19,495 -1.06 305,524 15.42 0.0967
2021-05-14 2021-03-31 13F MID-AMER APT CMNTYS COM 59522J103 1,833,527 -53,360 -2.83 264,698 10.73 0.0876
2021-03-08 2020-12-31 13F/A-2 MID-AMER APT CMNTYS COM 59522J103 1,886,887 20,521 1.10 239,045 10.46 0.0863
2021-02-11 2020-12-31 13F MID-AMER APT CMNTYS COM 59522J103 1,886,887 118,354 239,045 86,330.3481
2020-11-12 2020-09-30 13F MID-AMER APT CMNTYS COM 59522J103 1,866,366 114,662 6.55 216,401 7.74 0.0918
2020-08-13 2020-06-30 13F MID-AMER APT CMNTYS COM 59522J103 1,751,704 21,318 1.23 200,854 12.65 0.0883
2020-05-14 2020-03-31 13F MID AMER APT CMNTYS COM 59522J103 1,730,386 -8,632 -0.50 178,298 -22.24 0.0929
2020-02-14 2019-12-31 13F MID AMER APT CMNTYS COM 59522J103 1,739,018 -11,379 -0.65 229,302 0.76 0.0836
2019-11-12 2019-09-30 13F MID AMER APT CMNTYS COM 59522J103 1,750,397 -6,581 -0.37 227,571 9.99 0.0884
2019-08-13 2019-06-30 13F MID AMER APT CMNTYS COM 59522J103 1,756,978 11,866 0.68 206,896 8.44 0.0803
2019-08-12 2019-03-31 13F/A-2 MID AMER APT CMNTYS COM 59522J103 1,745,112 12,200 0.70 190,795 15.05 0.0760
2019-05-10 2019-03-31 13F MID AMER APT CMNTYS COM 59522J103 1,745,112 953,622 190,795
2019-02-26 2018-12-31 13F/A-1 MID AMER APT CMNTYS COM 59522J103 1,732,912 -23,615 -1.34 165,838 -5.75 0.0751
2019-02-13 2018-12-31 13F MID AMER APT CMNTYS COM 59522J103 1,732,912 -23,615 165,838
2018-11-13 2018-09-30 13F MID AMER APT CMNTYS COM 59522J103 1,756,527 -7,775 -0.44 175,964 -0.93 0.0670
2018-08-10 2018-06-30 13F MID AMER APT CMNTYS COM 59522J103 1,764,302 21,184 1.22 177,615 11.68 0.0708
2018-05-11 2018-03-31 13F MID AMER APT CMNTYS COM 59522J103 1,743,118 57,791 3.43 159,041 -6.16 0.0663
2018-02-12 2017-12-31 13F MID AMER APT CMNTYS COM 59522J103 1,685,327 47,183 2.88 169,477 -3.20 0.0703
2017-11-13 2017-09-30 13F MID AMER APT CMNTYS COM 59522J103 1,638,144 28,084 1.74 175,082 3.19 0.0765
2017-08-11 2017-06-30 13F MID AMER APT CMNTYS COM 59522J103 1,610,060 33,786 2.14 169,669 5.80 0.0783
2017-05-12 2017-03-31 13F MID AMER APT CMNTYS COM 59522J103 1,576,274 20,298 1.30 160,370 5.26 0.0766
2017-02-09 2016-12-31 13F MID AMER APT CMNTYS COM 59522J103 1,555,976 570,575 57.90 152,357 64.49 0.0761
2016-11-10 2016-09-30 13F MID-AMER APT CMNTYS COM 59522J103 985,401 6,070 0.62 92,622 -11.11 0.0501
2016-08-09 2016-06-30 13F MID-AMER APT CMNTYS COM 59522J103 979,331 16,899 1.76 104,199 5.93 0.0600
2016-05-13 2016-03-31 13F MID-AMER APT CMNTYS COM 59522J103 962,432 14,592 1.54 98,369 14.28 0.0589
2016-02-10 2015-12-31 13F MID-AMER APT CMNTYS COM 59522J103 947,840 25,439 2.76 86,075 13.98 0.0536
2015-11-13 2015-09-30 13F MID-AMER APT CMNTYS COM 59522J103 922,401 -6,233 -0.67 75,516 11.69 0.0496
2015-08-14 2015-06-30 13F MID-AMER APT CMNTYS COM 59522J103 928,634 4,360 0.47 67,615 -5.33 0.0414
2015-05-14 2015-03-31 13F MID-AMER APT CMNTYS COM 59522J103 924,274 -2,991 -0.32 71,420 3.13 0.0451
2015-02-06 2014-12-31 13F MID-AMER APT CMNTYS COM 59522J103 927,265 8,948 0.97 69,252 14.87 0.0455
2014-11-13 2014-09-30 13F MID-AMER APT CMNTYS COM 59522J103 918,317 32,897 3.72 60,289 -6.79 0.0427
2014-08-08 2014-06-30 13F MID-AMER APT CMNTYS COM 59522J103 885,420 37,914 4.47 64,680 11.79 0.0450
2014-05-14 2014-03-31 13F MID-AMER APT CMNTYS COM 59522J103 847,506 29,168 3.56 57,858 16.40 0.0432
2014-02-12 2013-12-31 13F MID-AMER APT CMNTYS COM 59522J103 818,338 362,231 79.42 49,707 74.37 0.0387
2013-11-13 2013-09-30 13F MID-AMER APT CMNTYS COM 59522J103 456,107 25,183 5.84 28,507 -2.38 0.0247
2013-08-15 2013-06-30 13F MID-AMER APT CMNTYS COM 59522J103 430,924 430,924 29,203 0.0275
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.