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

SecurityXBI / SPDR Series Trust - State Street SPDR S&P Biotech ETF
InstitutionVerition Fund Management LLC
Latest Disclosed Ownership44,776 shares
Latest Disclosed Value $ 5,719,238
Verition Fund Management LLC ownership in XBI / SPDR Series Trust - State Street SPDR S&P Biotech ETF

On May 15, 2026 - Verition Fund Management LLC filed a 13F-HR form disclosing ownership of 44,776 shares of SPDR Series Trust - State Street SPDR S&P Biotech ETF (US:XBI) valued at $5,719,238 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 83,176 shares of SPDR Series Trust - State Street SPDR S&P Biotech ETF. This represents a change in shares of -46.17% during the quarter. The current value of the position is $5,813,268 USD.

Verition Fund Management LLC has a history of taking positions in derivatives of the underlying security (XBI) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 2,800 of underlying shares valued at $357,644 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

XBI / SPDR Series Trust - State Street SPDR S&P Biotech ETF Historical Put/Call Ratio
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 44,776 -38,400 -46.17 5,719 -43.61 0.0371
2026-02-13 2025-12-31 13F SPDR SERIES TRUST STATE STREET SPD 78464A870 83,176 0 0.00 10,142 21.68 0.0398
2025-11-14 2025-09-30 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 83,176 -55,121 -39.86 8,334 -27.33 0.0344
2025-08-14 2025-06-30 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 138,297 55,121 66.27 11,469 70.02 0.0511
2025-05-15 2025-03-31 13F SPDR SER TR S&P BIOTECH 78464A870 83,176 0 0.00 6,746 -9.95 0.0314
2025-02-14 2024-12-31 13F SPDR SER TR S&P BIOTECH 78464A870 83,176 -15,116 -15.38 7,491 -22.87 0.0296
2024-11-14 2024-09-30 13F SPDR SER TR S&P BIOTECH 78464A870 98,292 15,116 18.17 9,711 25.94 0.0489
2024-08-14 2024-06-30 13F SPDR SER TR S&P BIOTECH 78464A870 83,176 78,871 1,832.08 7,711 1,789.95 0.0422
2024-05-14 2024-03-31 13F SPDR SER TR S&P BIOTECH 78464A870 4,305 4,305 409 0.0028
2024-02-14 2023-12-31 13F SPDR SER TR S&P BIOTECH 78464A870 0 -83,176 -100.00 0 -100.00
2023-11-14 2023-09-30 13F SPDR SER TR S&P BIOTECH 78464A870 83,176 0 0.00 6,074 -12.24 0.0709
2023-08-14 2023-06-30 13F SPDR SER TR S&P BIOTECH 78464A870 83,176 0 0.00 6,920 9.18 0.0923
2023-05-15 2023-03-31 13F SPDR SER TR S&P BIOTECH 78464A870 83,176 0 0.00 6,339 -8.18 0.0877
2023-02-14 2022-12-31 13F SPDR SER TR S&P BIOTECH 78464A870 83,176 -15,000 -15.28 6,904 -11.35 0.1079
2023-01-18 2022-09-30 13F/A-1 SPDR SER TR S&P BIOTECH 78464A870 98,176 0 0.00 7,787 6.79 0.0871
2022-11-14 2022-09-30 13F SPDR SER TR S&P BIOTECH 78464A870 98,176 0 7,787 0.0729
2022-08-30 2022-06-30 13F/A-1 SPDR SER TR S&P BIOTECH 78464A870 98,176 58,385 146.73 7,292 103.91 0.1442
2022-08-15 2022-06-30 13F SPDR SER TR S&P BIOTECH 78464A870 98,176 58,385 7,292 0.1233
2022-06-02 2022-03-31 13F/A-1 SPDR SER TR S&P BIOTECH 78464A870 39,791 20,520 106.48 3,576 65.71 0.0430
2022-05-13 2022-03-31 13F SPDR SER TR S&P BIOTECH 78464A870 39,791 20,520 3,576 0.0410
2022-05-03 2021-12-31 13F/A-1 SPDR SER TR S&P BIOTECH 78464A870 19,271 5,470 39.63 2,158 24.38 0.0147
2022-02-14 2021-12-31 13F SPDR SER TR S&P BIOTECH 78464A870 19,271 5,470 2,158 0.0140
2021-11-15 2021-09-30 13F SPDR SER TR S&P BIOTECH 78464A870 13,801 13,801 1,735 0.0150
2021-08-16 2021-06-30 13F SPDR SER TR S&P BIOTECH 78464A870 0 -25,000 -100.00 0 -100.00
2021-05-18 2021-03-31 13F SPDR SER TR S&P BIOTECH 78464A870 25,000 -8,794 -26.02 3,391 -22.93 0.0383
2014-02-14 2013-12-31 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 33,794 28,639 555.56 4,400 560.66 0.7822
2013-11-14 2013-09-30 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 5,155 -20,265 -79.72 666 -74.87 0.1007
2013-08-12 2013-06-30 13F SPDR SERIES TRUST S&P BIOTECH 78464A870 25,420 25,420 2,650 0.4863
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2021-11-15 2021-09-30 13F SPDR SER TR S&P BIOTECH Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-08-16 2021-06-30 13F SPDR SER TR S&P BIOTECH Call 37,800 5,118 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F SPDR SERIES TRUST STATE STREET SPD Put 2,800 358 n/a n/a n/a
2024-08-14 2024-06-30 13F SPDR SER TR S&P BIOTECH Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-14 2024-03-31 13F SPDR SER TR S&P BIOTECH Put 60,100 5,703 n/a n/a n/a
2022-08-30 2022-06-30 13F/A SPDR SER TR S&P BIOTECH Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-15 2022-06-30 13F SPDR SER TR S&P BIOTECH Put 0 0 n/a n/a n/a
2022-06-02 2022-03-31 13F/A SPDR SER TR S&P BIOTECH Put 34,000 0.00 3,056 -19.73 n/a n/a n/a
2022-05-13 2022-03-31 13F SPDR SER TR S&P BIOTECH Put 34,000 3,056 n/a n/a n/a
2022-05-03 2021-12-31 13F/A SPDR SER TR S&P BIOTECH Put 34,000 0.00 3,807 -10.93 n/a n/a n/a
2022-02-14 2021-12-31 13F SPDR SER TR S&P BIOTECH Put 34,000 3,807 n/a n/a n/a
2021-11-15 2021-09-30 13F SPDR SER TR S&P BIOTECH Put 34,000 4,274 n/a n/a n/a
2021-05-18 2021-03-31 13F SPDR SER TR S&P BIOTECH Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-16 2020-12-31 13F SPDR SER TR S&P BIOTECH Put 194,000 108.60 27,311 163.54 n/a n/a n/a
2020-11-16 2020-09-30 13F SPDR SER TR S&P BIOTECH Put 93,000 0.54 10,363 0.08 n/a n/a n/a
2020-08-14 2020-06-30 13F SPDR SER TR S&P BIOTECH Put 92,500 164.29 10,355 282.10 n/a n/a n/a
2020-05-15 2020-03-31 13F SPDR SER TR S&P BIOTECH Put 35,000 -53.33 2,710 -62.01 n/a n/a n/a
2020-02-14 2019-12-31 13F SPDR SERIES TRUST S&P BIOTECH Put 75,000 7,133 n/a n/a n/a
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.