Vanguard Index Funds - Vanguard S&P 500 ETF
US ˙ ARCA ˙ US9229083632

SecurityVOO / Vanguard Index Funds - Vanguard S&P 500 ETF
InstitutionProstatis Group LLC
Latest Disclosed Ownership1,434 shares
Latest Disclosed Value $ 857,053
Prostatis Group LLC reports 23.80% decrease in ownership of VOO / Vanguard Index Funds - Vanguard S&P 500 ETF

On May 12, 2026 - Prostatis Group LLC filed a 13F-HR form disclosing ownership of 1,434 shares of Vanguard Index Funds - Vanguard S&P 500 ETF (US:VOO) valued at $856,887 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,882 shares of Vanguard Index Funds - Vanguard S&P 500 ETF. This represents a change in shares of -23.80% during the quarter. The current value of the position is $994,278 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)
2026-05-12 2026-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,434 -448 -23.80 857 -27.37 0.2194
2026-02-17 2025-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,882 -213 -10.17 1,180 -7.96 0.2818
2025-11-04 2025-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,095 721 52.47 1,283 64.36 0.3215
2025-07-25 2025-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,374 -148 -9.72 781 -0.26 0.2234
2025-05-16 2025-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,522 -64 -4.04 782 -8.43 0.2468
2025-03-21 2024-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,586 -323 -16.92 854 -15.19 0.2491
2025-03-21 2024-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,909 -2,532 -57.01 1,007 -54.64 0.3296
2025-03-21 2024-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,441 -2,299 -34.11 2,221 -31.46 0.7789
2025-03-21 2024-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,740 -6,076 -47.41 3,240 -42.13 1.2285
2025-03-21 2023-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 12,816 -1,574 -10.94 5,598 -0.94 2.3399
2025-03-21 2023-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 14,390 -339,749 -95.94 5,651 -21.79 2.7617
2023-08-14 2023-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 354,139 337,598 2,040.98 7,225 15.23 3.3611
2023-05-22 2023-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 16,541 14,171 597.93 6,270 653.49 3.3098
2023-03-28 2022-12-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,370 -560 -19.11 833 -13.42 0.5081
2023-03-23 2022-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 389,145 -191,796 833 0.4856
2023-03-28 2022-09-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,930 -105 -3.46 962 -8.65 1.1084
2023-03-23 2022-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 580,941 -71,657 962 1.0121
2023-03-28 2022-06-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,035 10 0.33 1,053 -16.18 1.6408
2023-03-23 2022-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 652,598 649,573 1,053 1.4511
2023-03-28 2022-03-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,025 -102 -3.26 1,256 -8.06 1.0069
2023-03-23 2022-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 833,148 -42,862 1,256 0.9123
2023-03-28 2021-12-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,127 -769 -19.74 1,365 -11.13 0.8373
2023-03-23 2021-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 876,010 -230,980 1,365 0.8129
2023-03-28 2021-09-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,896 2,798 254.83 1,537 255.56 0.9182
2023-03-23 2021-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,106,990 1,105,892 1,537 0.8942
2023-03-28 2021-06-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,098 -351 -24.22 432 -18.03 0.2951
2023-03-23 2021-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,098 -351 432 0.2865
2023-03-28 2021-03-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,449 760 110.30 528 123.31 0.4142
2023-03-23 2021-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,449 760 528 0.4042
2023-03-28 2020-12-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 689 -17,120 -96.13 237 -95.69 0.1983
2023-03-23 2020-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 30,503 12,694 237 0.1912
2023-03-28 2020-09-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 17,809 17,809 5,479 5.1919
2023-03-23 2020-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 17,809 17,809 5,479 4.9323
2023-03-28 2020-03-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 0 -42,926 -100.00 0 -100.00
2023-03-23 2020-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 0 -75,457 0
2023-03-28 2019-12-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 42,926 42,926 12,698 11.4750
2023-03-23 2019-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 75,457 75,457 12,698 10.8943
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.