The Select Sector SPDR Trust - State Street Materials Select Sector SPDR ETF
US ˙ ARCA ˙ US81369Y1001

SecurityXLB / The Select Sector SPDR Trust - State Street Materials Select Sector SPDR ETF
InstitutionMain Management LLC
Latest Disclosed Ownership482,361 shares
Latest Disclosed Value $ 24,104
Main Management LLC reports 25.34% increase in ownership of XLB / The Select Sector SPDR Trust - State Street Materials Select Sector SPDR ETF

On May 14, 2026 - Main Management LLC filed a 13F-HR form disclosing ownership of 482,361 shares of The Select Sector SPDR Trust - State Street Materials Select Sector SPDR ETF (US:XLB) valued at $24,103,579 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 384,829 shares of The Select Sector SPDR Trust - State Street Materials Select Sector SPDR ETF. This represents a change in shares of 25.34% during the quarter. The current value of the position is $24,426,761 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.

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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 MATERIALS XLB 81369Y100 482,361 97,532 25.34 24 41.18 1.7543
2026-02-10 2025-12-31 13F MATERIALS COM 81369Y100 384,829 384,829 17 1.2559
2025-02-14 2024-12-31 13F MATERIALS XLB 81369Y100 0 -225 -100.00 0 0.0000
2024-11-15 2024-09-30 13F MATERIALS XLB 81369Y100 225 0 0.00 0 0.0018
2024-08-15 2024-06-30 13F MATERIALS XLB 81369Y100 225 0 0.00 0 0.0017
2024-05-15 2024-03-31 13F MATERIALS XLB 81369Y100 225 0 0.00 0 0.0018
2024-02-15 2023-12-31 13F MATERIALS XLB 81369Y100 225 0 0.00 0 0.0019
2023-11-14 2023-09-30 13F MATERIALS XLB 81369Y100 225 0 0.00 0 0.0018
2023-08-14 2023-06-30 13F MATERIALS XLB 81369Y100 225 0 0.00 0 0.0019
2023-05-12 2023-03-31 13F MATERIALS XLB 81369Y100 225 0 0.00 0 0.0019
2023-02-15 2022-12-31 13F MATERIALS XLB 81369Y100 225 0 0.00 0 -100.00 0.0020
2022-11-14 2022-09-30 13F MATERIALS XLB 81369Y100 225 0 0.00 15 -11.76 0.0019
2022-08-12 2022-06-30 13F MATERIALS COM 81369Y100 225 0 0.00 17 -15.00 0.0020
2022-05-11 2022-03-31 13F MATERIALS COM 81369Y100 225 0 0.00 20 0.00 0.0021
2022-02-15 2021-12-31 13F MATERIALS COM 81369Y100 225 0 0.00 20 11.11 0.0020
2021-11-16 2021-09-30 13F/A-1 MATERIALS COM 81369Y100 225 0 0.00 18 -5.26 0.0019
2021-11-12 2021-09-30 13F MATERIALS COM 81369Y100 225 0 302 0.0324
2021-08-13 2021-06-30 13F LEISURE & ENTERTAINMENT COM 81369Y100 225 0 0.00 19 5.56 0.0020
2021-05-14 2021-03-31 13F MATERIALS COM 81369Y100 225 0 0.00 18 12.50 0.0020
2021-02-12 2020-12-31 13F MATERIALS COM 81369Y100 225 0 0.00 16 14.29 0.0020
2020-11-13 2020-09-30 13F MATERIALS COM 81369Y100 225 0 0.00 14 7.69 0.0020
2020-08-14 2020-06-30 13F MATERIALS COM 81369Y100 225 0 0.00 13 30.00 0.0021
2020-05-11 2020-03-31 13F MATERIALS COM 81369Y100 225 0 0.00 10 -28.57 0.0018
2020-02-12 2019-12-31 13F MATERIALS COM 81369Y100 225 0 0.00 14 7.69 0.0019
2019-11-07 2019-09-30 13F MATERIALS COM 81369Y100 225 0 0.00 13 0.00 0.0018
2019-08-08 2019-06-30 13F MATERIALS COM 81369Y100 225 0 0.00 13 8.33 0.0019
2019-05-13 2019-03-31 13F MATERIALS COM 81369Y100 225 0 0.00 12 9.09 0.0018
2019-02-06 2018-12-31 13F MATERIALS COM 81369Y100 225 0 0.00 11 -15.38 0.0017
2018-11-09 2018-09-30 13F MATERIALS COM 81369Y100 225 225 13 0.0019
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.