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

SecurityMAA / Mid-America Apartment Communities, Inc.
InstitutionStandard Life Aberdeen plc
Latest Disclosed Ownership362,218 shares
Latest Disclosed Value $ 44,234,062
Standard Life Aberdeen plc reports 143.64% increase in ownership of MAA / Mid-America Apartment Communities, Inc.

On April 29, 2026 - Standard Life Aberdeen plc filed a 13F-HR form disclosing ownership of 362,218 shares of Mid-America Apartment Communities, Inc. (US:MAA) valued at $44,234,062 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 148,672 shares of Mid-America Apartment Communities, Inc.. This represents a change in shares of 143.64% during the quarter. The current value of the position is $49,819,464 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)
2026-04-29 2026-03-31 13F MID-AMER APT CMNTYS COM 59522J103 362,218 213,546 143.64 44,234 114.19 0.0388
2026-01-16 2025-12-31 13F MID-AMER APT CMNTYS COM 59522J103 148,672 -4,694 -3.06 20,652 -2.85 0.0178
2025-11-07 2025-09-30 13F MID-AMER APT CMNTYS COM 59522J103 153,366 4,671 3.14 21,258 -3.41 0.0336
2025-07-24 2025-06-30 13F MID-AMER APT CMNTYS COM 59522J103 148,695 -130,154 -46.68 22,008 -52.97 0.0374
2025-05-13 2025-03-31 13F MID-AMER APT CMNTYS COM 59522J103 278,849 196,522 238.71 46,794 269.41 0.0913
2025-01-24 2024-12-31 13F MID-AMER APT CMNTYS COM 59522J103 82,327 -2,259 -2.67 12,668 -5.89 0.0238
2024-10-25 2024-09-30 13F MID-AMER APT CMNTYS COM 59522J103 84,586 12,318 17.04 13,460 30.60 0.0247
2024-08-09 2024-06-30 13F MID-AMER APT CMNTYS COM 59522J103 72,268 -21,550 -22.97 10,306 -16.51 0.0198
2024-05-09 2024-03-31 13F MID-AMER APT CMNTYS COM 59522J103 93,818 8,276 9.67 12,345 7.33 0.0242
2024-01-31 2023-12-31 13F MID-AMER APT CMNTYS COM 59522J103 85,542 17,339 25.42 11,502 31.08 0.0249
2023-11-07 2023-09-30 13F MID-AMER APT CMNTYS COM 59522J103 68,203 1,440 2.16 8,774 -13.45 0.0224
2024-06-20 2023-06-30 13F/A-1 MID-AMER APT CMNTYS COM 59522J103 66,763 -206,488 -75.57 10,139 -75.44 0.0236
2023-08-04 2023-06-30 13F MID-AMER APT CMNTYS COM 59522J103 66,763 -206,488 10,139 0.0236
2024-06-20 2023-03-31 13F/A-1 MID-AMER APT CMNTYS COM 59522J103 273,251 21,396 8.50 41,272 4.38 0.1033
2023-04-28 2023-03-31 13F MID-AMER APT CMNTYS COM 59522J103 273,251 21,396 41,272 0.1033
2024-06-20 2022-12-31 13F/A-1 MID-AMER APT CMNTYS COM 59522J103 251,855 863 0.34 39,539 1.58 0.1075
2023-02-10 2022-12-31 13F MID-AMER APT CMNTYS COM 59522J103 251,855 863 39,539 0.1075
2022-11-10 2022-09-30 13F MID-AMER APT CMNTYS COM 59522J103 250,992 46,070 22.48 38,922 8.74 0.1159
2022-08-05 2022-06-30 13F MID-AMER APT CMNTYS COM 59522J103 204,922 2,662 1.32 35,792 -17.11 0.1125
2022-05-04 2022-03-31 13F MID-AMER APT CMNTYS COM 59522J103 202,260 116,665 136.30 43,178 119.86 0.1104
2022-02-10 2021-12-31 13F/A-1 MID-AMER APT CMNTYS COM 59522J103 85,595 -1,414 -1.63 19,639 19.93 0.0431
2022-02-08 2021-12-31 13F MID-AMER APT CMNTYS COM 59522J103 85,595 -1,414 19,639 0.0141
2021-11-15 2021-09-30 13F MID-AMER APT CMNTYS COM 59522J103 87,009 4,785 5.82 16,375 18.25 0.0369
2021-08-10 2021-06-30 13F MID-AMER APT CMNTYS COM 59522J103 82,224 10,151 14.08 13,848 33.09 0.0303
2021-05-06 2021-03-31 13F MID-AMER APT CMNTYS COM 59522J103 72,073 -117,396 -61.96 10,405 -56.65 0.0237
2021-02-10 2020-12-31 13F MID-AMER APT CMNTYS COM 59522J103 189,469 -46,067 -19.56 24,005 -12.10 0.0585
2020-10-21 2020-09-30 13F MID-AMER APT CMNTYS COM 59522J103 235,536 -22,210 -8.62 27,310 -7.60 0.0729
2020-08-10 2020-06-30 13F MID-AMER APT CMNTYS COM 59522J103 257,746 105,165 68.92 29,557 87.84 0.0800
2020-05-13 2020-03-31 13F MID AMER APT CMNTYS COM 59522J103 152,581 -27,371 -15.21 15,735 -33.69 0.0500
2020-02-18 2019-12-31 13F MID AMER APT CMNTYS COM 59522J103 179,952 -6,471 -3.47 23,728 -2.10 0.0573
2019-11-13 2019-09-30 13F MID AMER APT CMNTYS COM 59522J103 186,423 107,147 135.16 24,238 159.67 0.0604
2019-08-13 2019-06-30 13F MID AMER APT CMNTYS COM 59522J103 79,276 -1,190 -1.48 9,334 6.04 0.0207
2019-05-14 2019-03-31 13F MID AMER APT CMNTYS COM 59522J103 80,466 21,073 35.48 8,802 55.24 0.0191
2019-02-12 2018-12-31 13F MID AMER APT CMNTYS COM 59522J103 59,393 -167,541 -73.83 5,670 -75.06 0.0135
2018-11-20 2018-09-30 13F/A-1 MID AMER APT CMNTYS COM 59522J103 226,934 8,875 4.07 22,734 3.55 0.0424
2018-11-13 2018-09-30 13F MID AMER APT CMNTYS COM 59522J103 226,934 8,875 22,734
2018-08-09 2018-06-30 13F MID AMER APT CMNTYS COM 59522J103 218,059 -236,438 -52.02 21,954 -47.06 0.0422
2018-05-15 2018-03-31 13F MID AMER APT CMNTYS COM 59522J103 454,497 -149,554 -24.76 41,469 -31.74 0.0822
2018-02-12 2017-12-31 13F MID AMER APT CMNTYS COM 59522J103 604,051 -49,005 -7.50 60,753 -12.96 0.1162
2017-11-14 2017-09-30 13F MID AMER APT CMNTYS COM 59522J103 653,056 653,056 69,799 0.1273
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.