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

SecurityMAA / Mid-America Apartment Communities, Inc.
InstitutionOssiam
Latest Disclosed Ownership9,407 shares
Latest Disclosed Value $ 1,148,783
Ossiam reports 6.90% increase in ownership of MAA / Mid-America Apartment Communities, Inc.

On May 14, 2026 - Ossiam filed a 13F-HR form disclosing ownership of 9,407 shares of Mid-America Apartment Communities, Inc. (US:MAA) valued at $1,148,783 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 8,800 shares of Mid-America Apartment Communities, Inc.. This represents a change in shares of 6.90% during the quarter. The current value of the position is $1,246,804 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 9,407 607 6.90 1,149 -6.06 0.0202
2026-02-13 2025-12-31 13F MID-AMER APT CMNTYS COM 59522J103 8,800 -842 -8.73 1,222 -9.28 0.0244
2025-11-14 2025-09-30 13F MID-AMER APT CMNTYS COM 59522J103 9,642 -1,518 -13.60 1,347 -18.41 0.0173
2025-08-13 2025-06-30 13F MID-AMER APT CMNTYS COM 59522J103 11,160 -1,324 -10.61 1,652 -21.08 0.0186
2025-05-14 2025-03-31 13F MID-AMER APT CMNTYS COM 59522J103 12,484 1,297 11.59 2,092 20.99 0.0292
2025-02-13 2024-12-31 13F MID-AMER APT CMNTYS COM 59522J103 11,187 916 8.92 1,729 5.94 0.0299
2024-11-13 2024-09-30 13F MID-AMER APT CMNTYS COM 59522J103 10,271 -487 -4.53 1,632 6.39 0.0315
2024-08-13 2024-06-30 13F MID-AMER APT CMNTYS COM 59522J103 10,758 106 1.00 1,534 9.49 0.0291
2024-05-13 2024-03-31 13F MID-AMER APT CMNTYS COM 59522J103 10,652 5,493 106.47 1,402 102.16 0.0245
2024-02-13 2023-12-31 13F MID-AMER APT CMNTYS COM 59522J103 5,159 -1,727 -25.08 694 -21.69 0.0112
2023-11-14 2023-09-30 13F MID-AMER APT CMNTYS COM 59522J103 6,886 3,148 84.22 886 56.08 0.0157
2023-08-11 2023-06-30 13F MID-AMER APT CMNTYS COM 59522J103 3,738 -249 -6.25 568 -5.81 0.0102
2023-05-12 2023-03-31 13F MID-AMER APT CMNTYS COM 59522J103 3,987 1,092 37.72 602 32.60 0.0125
2023-02-13 2022-12-31 13F MID-AMER APT CMNTYS COM 59522J103 2,895 926 47.03 454 48.85 0.0118
2022-11-14 2022-09-30 13F MID-AMER APT CMNTYS COM 59522J103 1,969 -1,528 -43.69 305 -50.08 0.0088
2022-08-12 2022-06-30 13F MID-AMER APT CMNTYS COM 59522J103 3,497 233 7.14 611 -10.67 0.0184
2022-05-13 2022-03-31 13F MID-AMER APT CMNTYS COM 59522J103 3,264 -534 -14.06 684 -21.47 0.0179
2022-02-14 2021-12-31 13F MID-AMER APT CMNTYS COM 59522J103 3,798 3,798 871 0.0228
2021-02-12 2020-12-31 13F MID-AMER APT CMNTYS COM 59522J103 0 -1,581 -100.00 0 -100.00
2020-11-12 2020-09-30 13F MID-AMER APT CMNTYS COM 59522J103 1,581 1,581 183 0.0077
2020-08-13 2020-06-30 13F MID AMER APT CMNTYS COM 59522J103 0 -5,721 -100.00 0 -100.00
2020-05-14 2020-03-31 13F MID AMER APT CMNTYS COM 59522J103 5,721 1,204 26.65 589 -1.17 0.0401
2020-02-14 2019-12-31 13F MID AMER APT CMNTYS COM 59522J103 4,517 -614 -11.97 596 -10.64 0.0454
2019-11-13 2019-09-30 13F MID AMER APT CMNTYS COM 59522J103 5,131 -1,306 -20.29 667 -12.01 0.0465
2019-08-13 2019-06-30 13F MID AMER APT CMNTYS COM 59522J103 6,437 6,437 758 0.0590
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.