AvalonBay Communities, Inc.
US ˙ NYSE ˙ US0534841012

SecurityAVB / AvalonBay Communities, Inc.
InstitutionOssiam
Latest Disclosed Ownership6,484 shares
Latest Disclosed Value $ 1,059,161
Ossiam reports 12.94% increase in ownership of AVB / AvalonBay Communities, Inc.

On May 14, 2026 - Ossiam filed a 13F-HR form disclosing ownership of 6,484 shares of AvalonBay Communities, Inc. (US:AVB) valued at $1,059,161 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 5,741 shares of AvalonBay Communities, Inc.. This represents a change in shares of 12.94% during the quarter. The current value of the position is $1,187,804 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.

Upgrade to unlock premium data and export to Excel .

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 AVALONBAY CMNTYS COM 053484101 6,484 743 12.94 1,059 1.83 0.0186
2026-02-13 2025-12-31 13F AVALONBAY CMNTYS COM 053484101 5,741 -5,023 -46.66 1,041 -49.98 0.0208
2025-11-14 2025-09-30 13F AVALONBAY CMNTYS COM 053484101 10,764 471 4.58 2,079 -0.72 0.0268
2025-08-13 2025-06-30 13F AVALONBAY CMNTYS COM 053484101 10,293 5,032 95.65 2,095 85.47 0.0236
2025-05-14 2025-03-31 13F AVALONBAY CMNTYS COM 053484101 5,261 -1,970 -27.24 1,129 -28.99 0.0158
2025-02-13 2024-12-31 13F AVALONBAY CMNTYS COM 053484101 7,231 -260 -3.47 1,591 -5.75 0.0275
2024-11-13 2024-09-30 13F AVALONBAY CMNTYS COM 053484101 7,491 2,229 42.36 1,687 55.06 0.0326
2024-08-13 2024-06-30 13F AVALONBAY CMNTYS COM 053484101 5,262 380 7.78 1,089 20.22 0.0206
2024-05-13 2024-03-31 13F AVALONBAY CMNTYS COM 053484101 4,882 -3,560 -42.17 906 -42.72 0.0159
2024-02-13 2023-12-31 13F AVALONBAY CMNTYS COM 053484101 8,442 -4,555 -35.05 1,581 -29.21 0.0255
2023-11-14 2023-09-30 13F AVALONBAY CMNTYS COM 053484101 12,997 -10,729 -45.22 2,232 -50.29 0.0394
2023-08-11 2023-06-30 13F AVALONBAY CMNTYS COM 053484101 23,726 -82,080 -77.58 4,491 -74.75 0.0807
2023-05-12 2023-03-31 13F AVALONBAY CMNTYS COM 053484101 105,806 10,867 11.45 17,782 15.96 0.3695
2023-02-13 2022-12-31 13F AVALONBAY CMNTYS COM 053484101 94,939 48,877 106.11 15,335 80.74 0.3975
2022-11-14 2022-09-30 13F AVALONBAY CMNTYS COM 053484101 46,062 36,789 396.73 8,484 371.07 0.2457
2022-08-12 2022-06-30 13F AVALONBAY CMNTYS COM 053484101 9,273 -13,073 -58.50 1,801 -67.55 0.0542
2022-05-13 2022-03-31 13F AVALONBAY CMNTYS COM 053484101 22,346 885 4.12 5,550 2.38 0.1452
2022-02-14 2021-12-31 13F AVALONBAY CMNTYS COM 053484101 21,461 6,824 46.62 5,421 67.11 0.1420
2021-11-12 2021-09-30 13F AVALONBAY CMNTYS COM 053484101 14,637 1,830 14.29 3,244 11.17 0.0918
2021-08-13 2021-06-30 13F AVALONBAY CMNTYS COM 053484101 12,807 12,807 2,918 0.0792
2021-02-12 2020-12-31 13F AVALONBAY CMNTYS COM 053484101 0 -5,943 -100.00 0 -100.00
2020-11-12 2020-09-30 13F AVALONBAY CMNTYS COM 053484101 5,943 5,545 1,393.22 888 1,332.26 0.0372
2020-08-13 2020-06-30 13F AVALONBAY CMNTYS COM 053484101 398 -1,016 -71.85 62 -70.19 0.0040
2020-05-14 2020-03-31 13F AVALONBAY CMNTYS COM 053484101 1,414 -12,356 -89.73 208 -92.80 0.0142
2020-02-14 2019-12-31 13F AVALONBAY CMNTYS COM 053484101 13,770 7,732 128.06 2,888 122.15 0.2202
2019-11-13 2019-09-30 13F AVALONBAY CMNTYS COM 053484101 6,038 -555 -8.42 1,300 -2.99 0.0907
2019-08-13 2019-06-30 13F AVALONBAY CMNTYS COM 053484101 6,593 1,817 38.04 1,340 39.73 0.1043
2019-05-15 2019-03-31 13F AVALONBAY CMNTYS COM 053484101 4,776 4,372 1,082.18 959 1,270.00 0.0791
2019-02-14 2018-12-31 13F AVALONBAY CMNTYS COM 053484101 404 404 70 0.0105
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.