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

SecurityMAA / Mid-America Apartment Communities, Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership122,149 shares
Latest Disclosed Value $ 14,916,836
Renaissance Technologies Llc reports 124.32% increase in ownership of MAA / Mid-America Apartment Communities, Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 122,149 shares of Mid-America Apartment Communities, Inc. (US:MAA) valued at $14,916,836 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 54,453 shares of Mid-America Apartment Communities, Inc.. This represents a change in shares of 124.32% during the quarter. The current value of the position is $16,800,373 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)
2026-05-14 2026-03-31 13F MID-AMER APT CMNTYS COM 59522J103 122,149 67,696 124.32 14,917 97.20 0.0233
2026-02-12 2025-12-31 13F MID-AMER APT CMNTYS COM 59522J103 54,453 -128,896 -70.30 7,564 -70.48 0.0117
2025-11-13 2025-09-30 13F MID-AMER APT CMNTYS COM 59522J103 183,349 12,518 7.33 25,619 1.32 0.0338
2025-08-13 2025-06-30 13F MID-AMER APT CMNTYS COM 59522J103 170,831 158,731 1,311.83 25,285 1,147.36 0.0336
2025-05-14 2025-03-31 13F MID-AMER APT CMNTYS COM 59522J103 12,100 12,100 2,028 0.0031
2024-11-13 2024-09-30 13F MID-AMER APT CMNTYS COM 59522J103 0 -2,549 -100.00 0 -100.00
2024-08-09 2024-06-30 13F MID-AMER APT CMNTYS COM 59522J103 2,549 -78,600 -96.86 364 3,530.00 0.0006
2024-05-13 2024-03-31 13F MID-AMER APT CMNTYS COM 59522J103 81,149 -187,400 -69.78 11 -72.22 0.0168
2024-02-13 2023-12-31 13F MID-AMER APT CMNTYS COM 59522J103 268,549 101,600 60.86 36 71.43 0.0559
2023-11-14 2023-09-30 13F MID-AMER APT CMNTYS COM 59522J103 166,949 35,900 27.39 21 10.53 0.0366
2023-08-11 2023-06-30 13F MID-AMER APT CMNTYS COM 59522J103 131,049 -33,900 -20.55 20 -20.83 0.0287
2023-05-12 2023-03-31 13F MID-AMER APT CMNTYS COM 59522J103 164,949 54,100 48.81 25 41.18 0.0331
2023-02-13 2022-12-31 13F MID-AMER APT CMNTYS COM 59522J103 110,849 -340,000 -75.41 17 -99.98 0.0238
2022-11-14 2022-09-30 13F MID-AMER APT CMNTYS COM 59522J103 450,849 -183,500 -28.93 69,913 -36.90 0.0989
2022-08-12 2022-06-30 13F MID-AMER APT CMNTYS COM 59522J103 634,349 235,600 59.08 110,802 32.67 0.1312
2022-05-13 2022-03-31 13F MID-AMER APT CMNTYS COM 59522J103 398,749 387,300 3,382.83 83,518 3,079.22 0.0980
2022-02-11 2021-12-31 13F MID-AMER APT CMNTYS COM 59522J103 11,449 -14,500 -55.88 2,627 -29.87 0.0033
2021-05-13 2021-03-31 13F MID-AMER APT CMNTYS COM 59522J103 25,949 -13,500 -34.22 3,746 -25.05 0.0047
2021-02-10 2020-12-31 13F MID-AMER APT CMNTYS COM 59522J103 39,449 -93,700 -70.37 4,998 -67.63 0.0054
2020-11-13 2020-09-30 13F MID-AMER APT CMNTYS COM 59522J103 133,149 -145,300 -52.18 15,439 -51.65 0.0154
2020-08-13 2020-06-30 13F MID-AMER APT CMNTYS COM 59522J103 278,449 -46,225 -14.24 31,930 -4.55 0.0276
2020-05-14 2020-03-31 13F MID AMER APT CMNTYS COM 59522J103 324,674 81,246 33.38 33,451 4.22 0.0325
2020-02-13 2019-12-31 13F MID AMER APT CMNTYS COM 59522J103 243,428 -443,202 -64.55 32,098 -64.04 0.0247
2019-11-13 2019-09-30 13F MID AMER APT CMNTYS COM 59522J103 686,630 -309,211 -31.05 89,269 -23.88 0.0756
2019-08-12 2019-06-30 13F MID AMER APT CMNTYS COM 59522J103 995,841 -491,849 -33.06 117,270 -27.90 0.1032
2019-05-14 2019-03-31 13F MID AMER APT CMNTYS COM 59522J103 1,487,690 10,540 0.71 162,649 15.06 0.1479
2019-02-12 2018-12-31 13F MID AMER APT CMNTYS COM 59522J103 1,477,150 35,809 2.48 141,363 -2.10 0.1548
2018-11-13 2018-09-30 13F MID AMER APT CMNTYS COM 59522J103 1,441,341 -92,700 -6.04 144,394 -6.50 0.1484
2018-08-13 2018-06-30 13F/A-1 MID AMER APT CMNTYS COM 59522J103 1,534,041 -696,449 -31.22 154,432 -24.12 0.1683
2018-08-13 2018-06-30 13F MID AMER APT CMNTYS COM 59522J103 2,230,490 203,510
2018-05-14 2018-03-31 13F MID AMER APT CMNTYS COM 59522J103 2,230,490 111,100 5.24 203,510 -4.51 0.2226
2018-02-13 2017-12-31 13F MID AMER APT CMNTYS COM 59522J103 2,119,390 -27,500 -1.28 213,126 -7.12 0.2350
2017-11-13 2017-09-30 13F MID AMER APT CMNTYS COM 59522J103 2,146,890 261,900 13.89 229,460 15.52 0.2700
2017-08-11 2017-06-30 13F MID AMER APT CMNTYS COM 59522J103 1,884,990 451,849 31.53 198,640 36.23 0.2535
2017-05-12 2017-03-31 13F MID AMER APT CMNTYS COM 59522J103 1,433,141 470,800 48.92 145,808 54.73 0.2037
2017-02-13 2016-12-31 13F MID AMER APT CMNTYS COM 59522J103 962,341 343,741 55.57 94,232 62.07 0.1491
2016-11-14 2016-09-30 13F MID-AMER APT CMNTYS COM 59522J103 618,600 -139,562 -18.41 58,142 -27.92 0.1028
2016-08-12 2016-06-30 13F MID-AMER APT CMNTYS COM 59522J103 758,162 -16,838 -2.17 80,668 1.84 0.1535
2016-05-13 2016-03-31 13F MID-AMER APT CMNTYS COM 59522J103 775,000 125,638 19.35 79,213 34.33 0.1506
2016-02-11 2015-12-31 13F MID-AMER APT CMNTYS COM 59522J103 649,362 46,100 7.64 58,969 19.40 0.1285
2015-11-12 2015-09-30 13F MID-AMER APT CMNTYS COM 59522J103 603,262 305,700 102.73 49,389 127.97 0.1179
2015-08-14 2015-06-30 13F MID-AMER APT CMNTYS COM 59522J103 297,562 -110,100 -27.01 21,665 -31.22 0.0494
2015-05-13 2015-03-31 13F MID-AMER APT CMNTYS COM 59522J103 407,662 184,862 82.97 31,500 89.31 0.0671
2015-02-13 2014-12-31 13F MID-AMER APT CMNTYS COM 59522J103 222,800 181,000 433.01 16,639 506.38 0.0402
2014-11-12 2014-09-30 13F MID-AMER APT CMNTYS COM 59522J103 41,800 41,800 2,744 0.0075
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.