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

SecurityXBI / SPDR Series Trust - State Street SPDR S&P Biotech ETF
InstitutionParallel Advisors, LLC
Latest Disclosed Ownership27,287 shares
Latest Disclosed Value $ 3,327,121
Parallel Advisors, LLC ownership in XBI / SPDR Series Trust - State Street SPDR S&P Biotech ETF

On February 11, 2026 - Parallel Advisors, LLC filed a 13F-HR form disclosing ownership of 27,287 shares of SPDR Series Trust - State Street SPDR S&P Biotech ETF (US:XBI) valued at $3,327,104 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 24,430 shares of SPDR Series Trust - State Street SPDR S&P Biotech ETF. This represents a change in shares of 11.69% during the quarter. The current value of the position is $3,542,671 USD.

Parallel Advisors, 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 .

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)
2026-02-11 2025-12-31 13F SPDR BIOTECH ETF ETF 78464A870 27,287 2,857 11.69 3,327 35.96 0.0609
2025-11-13 2025-09-30 13F SPDR BIOTECH ETF ETF 78464A870 24,430 -699 -2.78 2,448 17.47 0.0448
2025-07-08 2025-06-30 13F SPDR BIOTECH ETF ETF 78464A870 25,129 -2,298 -8.38 2,084 -6.34 0.0416
2025-04-08 2025-03-31 13F SPDR BIOTECH ETF ETF 78464A870 27,427 -15,147 -35.58 2,224 -41.99 0.0502
2025-02-10 2024-12-31 13F SPDR BIOTECH ETF ETF 78464A870 42,574 1,568 3.82 3,834 -5.36 0.0862
2024-11-13 2024-09-30 13F SPDR BIOTECH ETF ETF 78464A870 41,006 -24 -0.06 4,052 6.52 0.0952
2024-08-08 2024-06-30 13F SPDR BIOTECH ETF ETF 78464A870 41,030 -166 -0.40 3,804 -2.71 0.0975
2024-05-06 2024-03-31 13F SPDR BIOTECH ETF ETF 78464A870 41,196 -787 -1.87 3,909 4.30 0.1059
2024-02-12 2023-12-31 13F SPDR BIOTECH ETF ETF 78464A870 41,983 886 2.16 3,749 24.93 0.1112
2024-05-20 2023-09-30 13F/A-1 SPDR BIOTECH ETF ETF 78464A870 41,097 195 0.48 3,001 -11.84 0.1000
2023-11-14 2023-09-30 13F SPDR BIOTECH ETF ETF 78464A870 41,097 195 3,001 0.1000
2024-05-20 2023-06-30 13F/A-1 SPDR BIOTECH ETF ETF 78464A870 40,902 346 0.85 3,403 10.13 0.1096
2023-08-04 2023-06-30 13F SPDR BIOTECH ETF ETF 78464A870 40,902 346 3,403 0.1096
2024-05-20 2023-03-31 13F/A-1 SPDR BIOTECH ETF ETF 78464A870 40,556 31,435 344.64 3,091 308.19 0.1042
2023-04-25 2023-03-31 13F SPDR BIOTECH ETF ETF 78464A870 40,556 31,435 3,091 0.1042
2023-02-06 2022-12-31 13F SPDR BIOTECH ETF ETF 78464A870 9,121 -443 -4.63 757 -0.26 0.0328
2022-11-10 2022-09-30 13F SPDR BIOTECH ETF ETF 78464A870 9,564 -370 -3.72 759 2.85 0.0349
2022-08-01 2022-06-30 13F SPDR BIOTECH ETF ETF 78464A870 9,934 725 7.87 738 -11.62 0.0339
2022-04-28 2022-03-31 13F SPDR BIOTECH ETF ETF 78464A870 9,209 -26 -0.28 835 -19.25 0.0331
2022-01-20 2021-12-31 13F SPDR BIOTECH ETF ETF 78464A870 9,235 386 4.36 1,034 -7.01 0.0384
2021-11-02 2021-09-30 13F/A-1 SPDR BIOTECH ETF ETF 78464A870 8,849 -139 -1.55 1,112 -8.63 0.0448
2021-08-06 2021-06-30 13F SPDR BIOTECH ETF ETF 78464A870 8,988 -30 -0.33 1,217 -0.49 0.0515
2021-04-23 2021-03-31 13F SPDR BIOTECH ETF ETF 78464A870 9,018 -12 -0.13 1,223 -3.78 0.0577
2021-02-02 2020-12-31 13F SPDR BIOTECH ETF ETF 78464A870 9,030 87 0.97 1,271 27.48 0.0690
2020-10-27 2020-09-30 13F SPDR BIOTECH ETF ETF 78464A870 8,943 -513 -5.43 997 -5.77 0.0617
2020-07-16 2020-06-30 13F SPDR BIOTECH ETF ETF 78464A870 9,456 -376 -3.82 1,058 39.03 0.0691
2020-04-27 2020-03-31 13F SPDR BIOTECH ETF ETF 78464A870 9,832 -548 -5.28 761 -22.90 0.0616
2020-01-30 2019-12-31 13F SPDR BIOTECH ETF ETF 78464A870 10,380 198 1.94 987 27.19 0.0740
2019-11-01 2019-09-30 13F SPDR BIOTECH ETF ETF 78464A870 10,182 116 1.15 776 -12.12 0.0664
2019-08-05 2019-06-30 13F SPDR BIOTECH ETF ETF 78464A870 10,066 345 3.55 883 0.34 0.0861
2019-05-01 2019-03-31 13F SPDR BIOTECH ETF ETF 78464A870 9,721 -150 -1.52 880 24.29 0.0988
2019-02-05 2018-12-31 13F SPDR BIOTECH ETF ETF 78464A870 9,871 26 0.26 708 -25.00 0.0987
2018-11-01 2018-09-30 13F SPDR BIOTECH ETF ETF 78464A870 9,845 395 4.18 944 5.01 0.1173
2018-07-30 2018-06-30 13F SPDR BIOTECH ETF ETF 78464A870 9,450 -70 -0.74 899 7.66 0.1285
2018-05-08 2018-03-31 13F SPDR BIOTECH ETF ETF 78464A870 9,520 235 2.53 835 5.96 0.1304
2018-02-13 2017-12-31 13F SPDR S&P BIOTECH ETF ETF 78464A870 9,285 544 6.22 788 10.36 0.1289
2017-11-15 2017-09-30 13F/A-1 SPDR S&P BIOTECH ETF ETF 78464A870 8,741 200 2.34 714 6.89 0.1228
2017-08-07 2017-06-30 13F SPDR S&P BIOTECH ETF ETF 78464A870 8,541 -25 -0.29 668 10.60 0.1260
2017-05-12 2017-03-31 13F/A-1 SPDR S&P BIOTECH ETF ETF 78464A870 8,566 1,266 17.34 604 39.81 0.1201
2017-05-12 2017-03-31 13F SPDR S&P BIOTECH ETF ETF 78464A870 8,566 604
2017-02-14 2016-12-31 13F SPDR S&P BIOTECH ETF ETF 78464A870 7,300 7,300 432 0.1015
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
(%)
2022-01-19 2021-12-31 13F SPDR BIOTECH ETF ETF Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-10-22 2021-09-30 13F SPDR BIOTECH ETF ETF Call 8,988 1,217 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.