AvalonBay Communities, Inc.
MX ˙ BMV ˙ US0534841012
SecurityMX:AVB / AvalonBay Communities, Inc.
InstitutionVestmark Advisory Solutions, Inc.
Latest Disclosed Ownership9,361 shares
Latest Disclosed Value $ 1,529,165
Vestmark Advisory Solutions, Inc. reports 4.92% increase in ownership of AVB / AvalonBay Communities, Inc.

On May 15, 2026 - Vestmark Advisory Solutions, Inc. filed a 13F-HR form disclosing ownership of 9,361 shares of AvalonBay Communities, Inc. (MX:AVB) valued at $1,529,165 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 8,922 shares of AvalonBay Communities, Inc.. This represents a change in shares of 4.92% during the quarter.

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)
2026-05-15 2026-03-31 13F AVALONBAY CMNTYS COM 053484101 9,361 439 4.92 1,529 -5.44 0.0105
2026-02-06 2025-12-31 13F AVALONBAY CMNTYS COM 053484101 8,922 2,270 34.13 1,618 25.93 0.0218
2025-11-10 2025-09-30 13F AVALONBAY CMNTYS COM 053484101 6,652 2,980 81.15 1,285 71.89 0.0245
2025-08-06 2025-06-30 13F AVALONBAY CMNTYS COM 053484101 3,672 1,254 51.86 747 44.21 0.0108
2025-05-13 2025-03-31 13F AVALONBAY CMNTYS COM 053484101 2,418 1,019 72.84 519 68.73 0.0134
2025-02-06 2024-12-31 13F AVALONBAY CMNTYS COM 053484101 1,399 -23 -1.62 308 -4.06 0.0106
2024-11-14 2024-09-30 13F AVALONBAY CMNTYS COM 053484101 1,422 1 0.07 320 9.22 0.0119
2024-08-12 2024-06-30 13F AVALONBAY CMNTYS COM 053484101 1,421 -40 -2.74 294 8.12 0.0123
2024-05-15 2024-03-31 13F AVALONBAY CMNTYS COM 053484101 1,461 -57 -3.75 271 -4.58 0.0117
2024-02-06 2023-12-31 13F AVALONBAY CMNTYS COM 053484101 1,518 -15 -0.98 284 7.98 0.0144
2023-11-06 2023-09-30 13F AVALONBAY CMNTYS COM 053484101 1,533 -5,825 -79.17 263 -81.11 0.0191
2023-08-07 2023-06-30 13F AVALONBAY CMNTYS COM 053484101 7,358 132 1.83 1,393 14.66 0.0530
2023-05-09 2023-03-31 13F AVALONBAY CMNTYS COM 053484101 7,226 50 0.70 1,215 4.75 0.0526
2023-01-20 2022-12-31 13F AVALONBAY CMNTYS COM 053484101 7,176 5,627 363.27 1,159 306.67 0.0565
2022-11-03 2022-09-30 13F AVALONBAY CMNTYS COM 053484101 1,549 1,549 285 0.0159
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.