SPDR Series Trust - State Street SPDR S&P Biotech ETF
US ˙ ARCA ˙ US78464A8707

SecurityXBI / SPDR Series Trust - State Street SPDR S&P Biotech ETF
InstitutionBrown Advisory Inc
Latest Disclosed Ownership53,920 shares
Latest Disclosed Value $ 6,887,202
Brown Advisory Inc reports 15.75% increase in ownership of XBI / SPDR Series Trust - State Street SPDR S&P Biotech ETF

On May 15, 2026 - Brown Advisory Inc filed a 13F-HR form disclosing ownership of 53,920 shares of SPDR Series Trust - State Street SPDR S&P Biotech ETF (US:XBI) valued at $6,887,202 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 46,584 shares of SPDR Series Trust - State Street SPDR S&P Biotech ETF. This represents a change in shares of 15.75% during the quarter. The current value of the position is $7,194,006 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)
2026-05-15 2026-03-31 13F SPDR SERIES TRUST STATE STREET SPD 78464A870 53,920 7,336 15.75 6,887 21.27 0.0113
2026-02-13 2025-12-31 13F SPDR SERIES TRUST STATE STREET SPD 78464A870 46,584 4,673 11.15 5,680 35.25 0.0079
2025-11-14 2025-09-30 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 41,911 -42,681 -50.46 4,199 -40.14 0.0055
2025-08-13 2025-06-30 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 84,592 -207,209 -71.01 7,015 -70.36 0.0092
2025-04-30 2025-03-31 13F SPDR SER TR S&P BIOTECH 78464A870 291,801 -36,419 -11.10 23,665 -19.94 0.0338
2025-02-14 2024-12-31 13F SPDR SER TR S&P BIOTECH 78464A870 328,220 -687,813 -67.70 29,559 -70.55 0.0375
2024-11-13 2024-09-30 13F SPDR SER TR S&P BIOTECH 78464A870 1,016,033 -74,328 -6.82 100,384 -0.70 0.1260
2024-08-14 2024-06-30 13F SPDR SER TR S&P BIOTECH 78464A870 1,090,361 -578,741 -34.67 101,087 -36.17 0.1321
2024-04-24 2024-03-31 13F SPDR SER TR S&P BIOTECH 78464A870 1,669,102 107,922 6.91 158,381 13.62 0.2117
2024-02-08 2023-12-31 13F SPDR SER TR S&P BIOTECH 78464A870 1,561,180 -51,664 -3.20 139,398 18.36 0.1960
2023-10-25 2023-09-30 13F SPDR SER TR S&P BIOTECH 78464A870 1,612,844 -136,602 -7.81 117,770 -19.09 0.1933
2023-07-31 2023-06-30 13F SPDR SER TR S&P BIOTECH 78464A870 1,749,446 -166,191 -8.68 145,554 -0.30 0.2274
2023-05-08 2023-03-31 13F SPDR SER TR S&P BIOTECH 78464A870 1,915,637 34,532 1.84 145,991 -6.50 0.2471
2023-02-13 2022-12-31 13F SPDR SER TR S&P BIOTECH 78464A870 1,881,105 910,850 93.88 156,132 102.87 0.2900
2022-11-14 2022-09-30 13F SPDR SER TR S&P BIOTECH 78464A870 970,255 889,912 1,107.64 76,960 1,189.76 0.1497
2022-11-14 2022-06-30 13F/A-2 SPDR SER TR S&P BIOTECH 78464A870 80,343 1,511 1.92 5,967 -15.78 0.0112
2022-09-13 2022-06-30 13F/A-1 SPDR SER TR S&P BIOTECH 78464A870 79,371 -37 5,895 0.0102
2022-08-02 2022-06-30 13F SPDR SER TR S&P BIOTECH 78464A870 69,296 -72 5,260 0.0035
2022-11-14 2022-03-31 13F/A-2 SPDR SER TR S&P BIOTECH 78464A870 78,832 24,487 45.06 7,085 16.45 0.0106
2022-09-13 2022-03-31 13F/A-1 SPDR SER TR S&P BIOTECH 78464A870 79,408 25,063 7,137 0.0100
2022-05-09 2022-03-31 13F SPDR SER TR S&P BIOTECH 78464A870 69,368 15,023 6,301 0.0086
2022-01-27 2021-12-31 13F SPDR SER TR S&P BIOTECH 78464A870 54,345 -13,265 -19.62 6,084 -28.42 0.0075
2021-11-12 2021-09-30 13F SPDR SER TR S&P BIOTECH 78464A870 67,610 -5,235 -7.19 8,499 -13.83 0.0125
2021-07-29 2021-06-30 13F SPDR SER TR S&P BIOTECH 78464A870 72,845 2,095 2.96 9,863 2.77 0.0149
2021-05-14 2021-03-31 13F SPDR SER TR S&P BIOTECH 78464A870 70,750 15,429 27.89 9,597 23.23 0.0164
2021-02-12 2020-12-31 13F SPDR SER TR S&P BIOTECH 78464A870 55,321 45,810 481.65 7,788 634.72 0.0138
2020-11-16 2020-09-30 13F SPDR SER TR S&P BIOTECH 78464A870 9,511 100 1.06 1,060 0.57 0.0022
2020-08-14 2020-06-30 13F SPDR SER TR S&P BIOTECH 78464A870 9,411 1,055 12.63 1,054 62.91 0.0025
2020-05-15 2020-03-31 13F SPDR SER TR S&P BIOTECH 78464A870 8,356 600 7.74 647 -12.33 0.0020
2020-02-14 2019-12-31 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 7,756 -37 -0.47 738 24.24 0.0019
2019-11-14 2019-09-30 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 7,793 -630 -7.48 594 -19.62 0.0017
2019-08-12 2019-06-30 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 8,423 167 2.02 739 -1.07 0.0021
2019-05-15 2019-03-31 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 8,256 0 0.00 747 26.18 0.0021
2019-02-13 2018-12-31 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 8,256 5,349 184.00 592 112.19 0.0020
2018-11-13 2018-09-30 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 2,907 0 0.00 279 0.72 0.0008
2018-08-10 2018-06-30 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 2,907 0 0.00 277 8.63 0.0009
2018-06-28 2018-03-31 13F/A-1 SPDR SERIES TRUST S&P BIOTECH 78464A870 2,907 -303 -9.44 255 -6.59 0.0008
2018-05-14 2018-03-31 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 2,907 -303 255
2018-02-12 2017-12-31 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 3,210 303 10.42 273 8.33 0.0009
2017-11-13 2017-09-30 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 2,907 2,057 242.00 252 108.26 0.0008
2014-05-13 2014-03-31 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 850 0 0.00 121 9.01 0.0004
2014-02-11 2013-12-31 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 850 850 111 0.0004
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.