阿瓦隆灣社區股份有限公司
MX ˙ BMV ˙ US0534841012
SecurityMX:AVB / AvalonBay Communities, Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership127,814 shares
Latest Disclosed Value $ 20,878,417
Renaissance Technologies Llc ownership in AVB / AvalonBay Communities, Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 127,814 shares of AvalonBay Communities, Inc. (MX:AVB) valued at $20,878,417 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 0 shares of AvalonBay Communities, Inc..

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 AVALONBAY CMNTYS COM 053484101 127,814 127,814 20,878 0.0327
2026-02-12 2025-12-31 13F AVALONBAY CMNTYS COM 053484101 0 -36,814 -100.00 0 -100.00
2025-11-13 2025-09-30 13F AVALONBAY CMNTYS COM 053484101 36,814 -80,763 -68.69 7,111 -70.28 0.0094
2025-08-13 2025-06-30 13F AVALONBAY CMNTYS COM 053484101 117,577 117,577 23,927 0.0318
2025-02-13 2024-12-31 13F AVALONBAY CMNTYS COM 053484101 0 -16,000 -100.00 0 -100.00
2024-11-13 2024-09-30 13F AVALONBAY CMNTYS COM 053484101 16,000 16,000 3,604 0.0054
2024-08-09 2024-06-30 13F AVALONBAY CMNTYS COM 053484101 0 -174,814 -100.00 0 -100.00
2024-05-13 2024-03-31 13F AVALONBAY CMNTYS COM 053484101 174,814 35,800 25.75 32 23.08 0.0510
2024-02-13 2023-12-31 13F AVALONBAY CMNTYS COM 053484101 139,014 28,100 25.33 26 36.84 0.0403
2023-11-14 2023-09-30 13F AVALONBAY CMNTYS COM 053484101 110,914 -84,300 -43.18 19 -47.22 0.0325
2023-08-11 2023-06-30 13F AVALONBAY CMNTYS COM 053484101 195,214 -84,800 -30.28 37 -23.40 0.0532
2023-05-12 2023-03-31 13F AVALONBAY CMNTYS COM 053484101 280,014 -59,500 -17.53 47 -12.96 0.0625
2023-02-13 2022-12-31 13F AVALONBAY CMNTYS COM 053484101 339,514 260,700 330.78 55 -99.63 0.0750
2022-11-14 2022-09-30 13F AVALONBAY CMNTYS COM 053484101 78,814 76,000 2,700.78 14,517 2,553.93 0.0205
2022-08-12 2022-06-30 13F AVALONBAY CMNTYS COM 053484101 2,814 2,814 547 0.0006
2022-05-13 2022-03-31 13F AVALONBAY CMNTYS COM 053484101 0 -136,714 -100.00 0 -100.00
2022-02-11 2021-12-31 13F AVALONBAY CMNTYS COM 053484101 136,714 136,714 34,533 0.0430
2021-08-13 2021-06-30 13F AVALONBAY CMNTYS COM 053484101 0 -112,714 -100.00 0 -100.00
2021-05-13 2021-03-31 13F AVALONBAY CMNTYS COM 053484101 112,714 112,714 20,797 0.0259
2021-02-10 2020-12-31 13F AVALONBAY CMNTYS COM 053484101 0 -354,014 -100.00 0 -100.00
2020-11-13 2020-09-30 13F AVALONBAY CMNTYS COM 053484101 354,014 -174,200 -32.98 52,868 -35.28 0.0528
2020-08-13 2020-06-30 13F AVALONBAY CMNTYS COM 053484101 528,214 386,600 273.00 81,683 291.93 0.0705
2020-05-14 2020-03-31 13F AVALONBAY CMNTYS COM 053484101 141,614 32,214 29.45 20,841 -9.15 0.0202
2020-02-13 2019-12-31 13F AVALONBAY CMNTYS COM 053484101 109,400 -482,914 -81.53 22,941 -82.01 0.0176
2019-11-13 2019-09-30 13F AVALONBAY CMNTYS COM 053484101 592,314 -372,300 -38.60 127,543 -34.92 0.1080
2019-08-12 2019-06-30 13F AVALONBAY CMNTYS COM 053484101 964,614 -504,300 -34.33 195,990 -33.53 0.1726
2019-05-14 2019-03-31 13F AVALONBAY CMNTYS COM 053484101 1,468,914 -294,600 -16.71 294,855 -3.94 0.2681
2019-02-12 2018-12-31 13F AVALONBAY CMNTYS COM 053484101 1,763,514 213,714 13.79 306,940 9.33 0.3361
2018-11-13 2018-09-30 13F AVALONBAY CMNTYS COM 053484101 1,549,800 25,286 1.66 280,746 7.13 0.2886
2018-08-13 2018-06-30 13F/A-1 AVALONBAY CMNTYS COM 053484101 1,524,514 -67,000 -4.21 262,049 0.12 0.2856
2018-08-13 2018-06-30 13F AVALONBAY CMNTYS COM 053484101 1,591,514 261,740
2018-05-14 2018-03-31 13F AVALONBAY CMNTYS COM 053484101 1,591,514 120,900 8.22 261,740 -0.24 0.2862
2018-02-13 2017-12-31 13F AVALONBAY CMNTYS COM 053484101 1,470,614 -115,600 -7.29 262,372 -7.29 0.2893
2017-11-13 2017-09-30 13F AVALONBAY CMNTYS COM 053484101 1,586,214 309,114 24.20 283,012 15.32 0.3330
2017-08-11 2017-06-30 13F AVALONBAY CMNTYS COM 053484101 1,277,100 203,100 18.91 245,420 24.46 0.3132
2017-05-12 2017-03-31 13F AVALONBAY CMNTYS COM 053484101 1,074,000 219,200 25.64 197,186 30.22 0.2755
2017-02-13 2016-12-31 13F AVALONBAY CMNTYS COM 053484101 854,800 134,600 18.69 151,428 18.23 0.2396
2016-11-14 2016-09-30 13F AVALONBAY CMNTYS COM 053484101 720,200 -191,714 -21.02 128,080 -22.14 0.2264
2016-08-12 2016-06-30 13F AVALONBAY CMNTYS COM 053484101 911,914 -438,900 -32.49 164,500 -35.97 0.3131
2016-05-13 2016-03-31 13F AVALONBAY CMNTYS COM 053484101 1,350,814 212,300 18.65 256,925 22.56 0.4884
2016-02-11 2015-12-31 13F AVALONBAY CMNTYS COM 053484101 1,138,514 278,100 32.32 209,635 39.37 0.4568
2015-11-12 2015-09-30 13F AVALONBAY CMNTYS COM 053484101 860,414 410,014 91.03 150,418 108.90 0.3589
2015-08-14 2015-06-30 13F AVALONBAY CMNTYS COM 053484101 450,400 179,200 66.08 72,005 52.37 0.1640
2015-05-13 2015-03-31 13F AVALONBAY CMNTYS COM 053484101 271,200 106,400 64.56 47,257 75.50 0.1006
2015-02-13 2014-12-31 13F AVALONBAY CMNTYS COM 053484101 164,800 158,900 2,693.22 26,927 3,136.42 0.0650
2014-11-12 2014-09-30 13F AVALONBAY CMNTYS COM 053484101 5,900 5,900 832 0.0023
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.