Extra Space Storage Inc.
MX ˙ BMV ˙ US30225T1025
SecurityMX:EXR / Extra Space Storage Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership26,543 shares
Latest Disclosed Value $ 3,480,584
Janus Henderson Group Plc reports 4.56% decrease in ownership of EXR / Extra Space Storage Inc.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 26,543 shares of Extra Space Storage Inc. (MX:EXR) valued at $3,480,584 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 27,810 shares of Extra Space Storage Inc.. This represents a change in shares of -4.56% 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)
2026-05-18 2026-03-31 13F/A-1 EXTRA SPACE STORAGE COM 30225T102 26,543 -1,267 -4.56 3,481 -3.92 0.0006
2026-05-15 2026-03-31 13F EXTRA SPACE STORAGE COM 30225T102 26,543 -1,267 3,481 0.0006
2026-02-17 2025-12-31 13F EXTRA SPACE STORAGE COM 30225T102 27,810 421 1.54 3,623 -6.14 0.0016
2025-11-14 2025-09-30 13F EXTRA SPACE STORAGE COM 30225T102 27,389 0 0.00 3,860 -4.43 0.0018
2025-08-14 2025-06-30 13F EXTRA SPACE STORAGE COM 30225T102 27,389 -881 -3.12 4,038 -1.73 0.0020
2025-05-15 2025-03-31 13F EXTRA SPACE STORAGE COM 30225T102 28,270 467 1.68 4,110 -1.23 0.0023
2025-02-14 2024-12-31 13F EXTRA SPACE STORAGE COM 30225T102 27,803 -1,314 -4.51 4,161 -20.70 0.0021
2024-11-14 2024-09-30 13F EXTRA SPACE STORAGE COM 30225T102 29,117 500 1.75 5,246 17.99 0.0027
2024-08-14 2024-06-30 13F EXTRA SPACE STORAGE COM 30225T102 28,617 -569,112 -95.21 4,446 -94.94 0.0024
2024-05-15 2024-03-31 13F EXTRA SPACE STORAGE COM 30225T102 597,729 572,231 2,244.22 87,824 2,047.29 0.0479
2024-02-14 2023-12-31 13F EXTRA SPACE STORAGE COM 30225T102 25,498 339 1.35 4,091 33.66 0.0024
2023-11-14 2023-09-30 13F EXTRA SPACE STORAGE COM 30225T102 25,159 10,211 68.31 3,060 37.59 0.0020
2023-08-14 2023-06-30 13F EXTRA SPACE STORAGE COM 30225T102 14,948 -8,406 -35.99 2,224 -41.54 0.0014
2023-05-15 2023-03-31 13F EXTRA SPACE STORAGE COM 30225T102 23,354 -143 -0.61 3,805 10.04 0.0025
2023-02-14 2022-12-31 13F EXTRA SPACE STORAGE COM 30225T102 23,497 3,814 19.38 3,458 1.65 0.0025
2023-01-13 2022-09-30 13F/A-1 EXTRA SPACE STORAGE COM 30225T102 19,683 -36,512 -64.97 3,401 -64.43 0.0025
2022-11-14 2022-09-30 13F EXTRA SPACE STORAGE COM 30225T102 19,683 -36,512 3,401 0.0025
2022-08-15 2022-06-30 13F EXTRA SPACE STORAGE COM 30225T102 56,195 -3,145 -5.30 9,562 -21.62 0.0066
2022-05-16 2022-03-31 13F EXTRA SPACE STORAGE COM 30225T102 59,340 -15,889 -21.12 12,200 -28.48 0.0059
2022-02-14 2021-12-31 13F EXTRA SPACE STORAGE COM 30225T102 75,229 2,440 3.35 17,058 39.51 0.0071
2021-11-16 2021-09-30 13F EXTRA SPACE STORAGE COM 30225T102 72,789 -42,070 -36.63 12,227 -35.02 0.0053
2021-08-16 2021-06-30 13F EXTRA SPACE STORAGE COM 30225T102 114,859 54,926 91.65 18,816 136.83 0.0081
2021-05-17 2021-03-31 13F EXTRA SPACE STORAGE COM 30225T102 59,933 -101,941 -62.98 7,945 -57.64 0.0036
2021-02-16 2020-12-31 13F EXTRA SPACE STORAGE COM 30225T102 161,874 -66,949 -29.26 18,754 -23.39 0.0087
2020-11-16 2020-09-30 13F EXTRA SPACE STORAGE COM 30225T102 228,823 -107,085 -31.88 24,480 -21.10 0.0128
2020-08-14 2020-06-30 13F EXTRA SPACE STORAGE COM 30225T102 335,908 -48,649 -12.65 31,027 -15.74 0.0174
2020-05-14 2020-03-31 13F EXTRA SPACE STORAGE COM 30225T102 384,557 -440,049 -53.36 36,823 -57.72 0.0253
2020-02-18 2019-12-31 13F EXTRA SPACE STORAGE COM 30225T102 824,606 -125,334 -13.19 87,095 -21.52 0.0446
2019-11-14 2019-09-30 13F EXTRA SPACE STORAGE COM 30225T102 949,940 -74,814 -7.30 110,972 2.06 0.0601
2019-07-31 2019-06-30 13F EXTRA SPACE STORAGE COM 30225T102 1,024,754 -253,141 -19.81 108,727 -16.51 0.0592
2019-04-30 2019-03-31 13F EXTRA SPACE STORAGE COM 30225T102 1,277,895 158,351 14.14 130,231 28.56 0.0722
2019-02-06 2018-12-31 13F EXTRA SPACE STORAGE COM 30225T102 1,119,544 -19,525 -1.71 101,296 2.64 0.0646
2018-11-09 2018-09-30 13F EXTRA SPACE STORAGE COM 30225T102 1,139,069 812,925 249.25 98,689 203.15 0.0527
2018-08-10 2018-06-30 13F EXTRA SPACE STORAGE COM 30225T102 326,144 170,000 108.87 32,554 138.65 0.0186
2018-05-14 2018-03-31 13F EXTRA SPACE STORAGE COM 30225T102 156,144 83,686 115.50 13,641 115.26 0.0080
2018-03-12 2017-12-31 13F/A-1 EXTRA SPACE STORAGE COM 30225T102 72,458 25,914 55.68 6,337 70.35 0.0039
2018-02-09 2017-12-31 13F EXTRA SPACE STORAGE COM 30225T102 72,458 25,914 6,337
2017-11-14 2017-09-30 13F EXTRA SPACE STORAGE COM 30225T102 46,544 5,461 13.29 3,720 16.07 0.0024
2017-08-17 2017-06-30 13F/A-1 EXTRA SPACE STORAGE COM 30225T102 41,083 23,482 133.41 3,205 144.66 0.0022
2017-08-14 2017-06-30 13F EXTRA SPACE STORAGE COM 30225T102 41,083 23,482 3,205
2017-05-03 2017-03-31 13F EXTRA SPACE STORAGE COM 30225T102 17,601 0 0.00 1,310 -3.68 0.0092
2017-01-30 2016-12-31 13F EXTRA SPACE STORAGE COM 30225T102 17,601 1,700 10.69 1,360 7.68 0.0100
2016-10-24 2016-09-30 13F EXTRA SPACE STORAGE COM 30225T102 15,901 -82,616 -83.86 1,263 -86.15 0.0093
2016-07-29 2016-06-30 13F EXTRA SPACE STORAGE COM 30225T102 98,517 3,217 3.38 9,116 2.39 0.0758
2016-05-12 2016-03-31 13F EXTRA SPACE STORAGE COM 30225T102 95,300 2,055 2.20 8,903 8.23 0.0722
2016-02-03 2015-12-31 13F EXTRA SPACE STORAGE COM 30225T102 93,245 -26,211 -21.94 8,226 -10.81 0.0660
2015-11-16 2015-09-30 13F EXTRA SPACE STORAGE COM 30225T102 119,456 -40,600 -25.37 9,223 -11.62 0.0812
2015-08-17 2015-06-30 13F EXTRA SPACE STORAGE COM 30225T102 160,056 356 0.22 10,436 -3.28 0.0820
2015-06-02 2015-03-31 13F/A-1 EXTRA SPACE STORAGE COM 30225T102 159,700 159,700 0.00 10,790 0.0832
2015-05-15 2015-03-31 13F EXTRA SPACE STORAGE COM 30225T102 159,700 10,790
2015-02-12 2014-12-31 13F EXTRA SPACE STORAGE COM 30225T102 0 -345,100 -100.00 0 -100.00
2014-11-12 2014-09-30 13F EXTRA SPACE STORAGE COM 30225T102 345,100 1,500 0.44 17,793 -2.78 0.1674
2014-08-13 2014-06-30 13F EXTRA SPACE STORAGE COM 30225T102 343,600 -40,200 -10.47 18,302 -1.73 0.1709
2014-05-08 2014-03-31 13F EXTRA SPACE STORAGE COM 30225T102 383,800 -49,600 -11.44 18,624 2.03 0.1813
2014-01-14 2013-12-31 13F EXTRA SPACE STORAGE COM 30225T102 433,400 7,900 1.86 18,253 -6.26 0.1844
2013-11-12 2013-09-30 13F EXTRA SPACE STORAGE COM 30225T102 425,500 3,668 0.87 19,471 10.54 0.2148
2013-08-15 2013-06-30 13F EXTRA SPACE STORAGE COM 30225T102 421,832 421,832 17,614 0.2059
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.