State Street SPDR S&P 500 ETF Trust
US ˙ ARCA ˙ US78462F1030

SecuritySPY / State Street SPDR S&P 500 ETF Trust
InstitutionParthenon Llc
Latest Disclosed Ownership2,204 shares
Latest Disclosed Value $ 1,433,349
Parthenon Llc ownership in SPY / State Street SPDR S&P 500 ETF Trust

On April 28, 2026 - Parthenon Llc filed a 13F-HR form disclosing ownership of 2,204 shares of State Street SPDR S&P 500 ETF Trust (US:SPY) valued at $1,433,349 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 2,204 shares of State Street SPDR S&P 500 ETF Trust. This represents a change in shares of 0.00% during the quarter. The current value of the position is $1,625,274 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)
2026-04-28 2026-03-31 13F STATE STR SPDR S&P 500 ETF T TR UNIT 78462F103 2,204 0 0.00 1,433 -4.59 0.1639
2026-01-23 2025-12-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,204 0 0.00 1,503 2.32 0.1622
2025-10-31 2025-09-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,204 -22 -0.99 1,468 6.76 0.1627
2025-07-29 2025-06-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,226 -40 -1.77 1,375 8.52 0.1573
2025-05-02 2025-03-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,266 0 0.00 1,268 -4.59 0.1559
2025-02-03 2024-12-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,266 0 0.00 1,328 2.15 0.1606
2024-11-05 2024-09-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,266 0 0.00 1,300 5.43 0.1553
2024-08-08 2024-06-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,266 0 0.00 1,233 4.05 0.1566
2024-04-30 2024-03-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,266 -106 -4.47 1,185 5.15 0.1503
2024-02-05 2023-12-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,372 100 4.40 1,127 16.07 0.1559
2023-10-30 2023-09-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,272 0 0.00 971 -3.57 0.1457
2023-07-27 2023-06-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,272 0 0.00 1,007 8.28 0.1455
2023-05-08 2023-03-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,272 0 0.00 930 7.14 0.1423
2023-02-08 2022-12-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,272 0 0.00 869 6.90 0.1425
2022-11-01 2022-09-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,272 0 0.00 812 -5.25 0.1465
2022-07-29 2022-06-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,272 0 0.00 857 -16.47 0.1453
2022-05-09 2022-03-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,272 0 0.00 1,026 -4.91 0.1487
2022-02-07 2021-12-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,272 0 0.00 1,079 10.67 0.1513
2021-10-28 2021-09-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,272 0 0.00 975 0.21 0.1465
2021-07-28 2021-06-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,272 0 0.00 973 8.11 0.1458
2021-04-23 2021-03-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,272 -218 -8.76 900 -3.33 0.1447
2021-02-03 2020-12-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,490 0 0.00 931 11.63 0.1606
2020-10-29 2020-09-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,490 0 0.00 834 8.59 0.1618
2020-07-24 2020-06-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,490 0 0.00 768 19.63 0.1595
2020-04-28 2020-03-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,490 0 0.00 642 -19.85 0.1528
2020-01-28 2019-12-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,490 0 0.00 801 8.39 0.1599
2019-10-31 2019-09-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,490 -228 -8.39 739 -7.16 0.1581
2019-07-29 2019-06-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,718 0 0.00 796 3.65 0.1707
2019-05-03 2019-03-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,718 0 0.00 768 13.11 0.1717
2019-01-29 2018-12-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,718 0 0.00 679 -14.05 0.1672
2018-11-14 2018-09-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,718 228 9.16 790 17.04 0.1736
2018-08-02 2018-06-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,490 0 0.00 675 3.05 0.1557
2018-05-03 2018-03-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,490 0 0.00 655 -1.36 0.1543
2018-02-05 2017-12-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,490 0 0.00 664 6.07 0.1496
2017-10-31 2017-09-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,490 0 0.00 626 3.99 0.1478
2017-07-21 2017-06-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,490 -100 -3.86 602 -1.47 0.1432
2017-05-05 2017-03-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,590 0 0.00 611 5.53 0.1450
2017-02-01 2016-12-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,590 0 0.00 579 3.39 0.1422
2016-11-07 2016-09-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,590 0 0.00 560 3.13 0.1390
2016-07-26 2016-06-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,590 0 0.00 543 2.07 0.1363
2016-05-16 2016-03-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,590 0 0.00 532 0.76 0.1366
2016-02-03 2015-12-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,590 0 0.00 528 6.45 0.1380
2015-10-29 2015-09-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,590 0 0.00 496 -6.94 0.1384
2015-07-24 2015-06-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,590 0 0.00 533 -0.37 0.1407
2015-04-28 2015-03-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 2,590 1,500 137.61 535 138.84 0.1420
2015-02-17 2014-12-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 1,090 0 0.00 224 4.19 0.0618
2014-10-23 2014-09-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 1,090 0 0.00 215 0.94 0.0621
2014-07-28 2014-06-30 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 1,090 0 0.00 213 4.41 0.0630
2014-04-18 2014-03-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 1,090 0 0.00 204 1.49 0.0614
2014-02-21 2013-12-31 13F SPDR S&P 500 ETF TR TR UNIT 78462F103 1,090 1,090 201 0.0613
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.