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

SecurityVOO / Vanguard Index Funds - Vanguard S&P 500 ETF
InstitutionChicago Capital, LLC
Latest Disclosed Ownership4,952 shares
Latest Disclosed Value $ 2,959,030
Chicago Capital, LLC reports 2.65% increase in ownership of VOO / Vanguard Index Funds - Vanguard S&P 500 ETF

On April 23, 2026 - Chicago Capital, LLC filed a 13F-HR form disclosing ownership of 4,952 shares of Vanguard Index Funds - Vanguard S&P 500 ETF (US:VOO) valued at $2,959,068 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 4,824 shares of Vanguard Index Funds - Vanguard S&P 500 ETF. This represents a change in shares of 2.65% during the quarter. The current value of the position is $3,433,519 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)
2026-04-23 2026-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,952 128 2.65 2,959 -2.18 0.0798
2026-01-26 2025-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,824 -3,948 -45.01 3,025 -43.68 0.0747
2025-10-22 2025-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 8,772 483 5.83 5,372 14.08 0.1322
2025-07-17 2025-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 8,289 -4,957 -37.42 4,708 -30.84 0.1162
2025-04-17 2025-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 13,246 136 1.04 6,807 -3.62 0.1923
2025-01-24 2024-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 13,110 162 1.25 7,064 3.38 0.1873
2024-10-18 2024-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 12,948 -540 -4.00 6,832 1.29 0.1897
2024-08-06 2024-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 13,488 73 0.54 6,746 4.61 0.2006
2024-04-15 2024-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 13,415 56 0.42 6,449 10.51 0.1965
2024-01-22 2023-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 13,359 144 1.09 5,835 12.45 0.2101
2023-10-25 2023-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 13,215 1,327 11.16 5,190 7.19 0.2427
2023-07-20 2023-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 11,888 4,998 72.54 4,842 86.84 0.2183
2023-04-18 2023-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,890 -1,107 -13.84 2,591 -7.76 0.1289
2023-01-20 2022-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 7,997 57 0.72 2,810 7.75 0.1554
2022-10-14 2022-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 7,940 177 2.28 2,607 -3.19 0.1508
2022-07-21 2022-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 7,763 1,076 16.09 2,693 -2.99 0.1488
2022-04-21 2022-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,687 597 9.80 2,776 4.40 0.1195
2022-01-20 2021-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,090 0 0.00 2,659 10.70 0.0990
2021-10-28 2021-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,090 2,971 95.25 2,402 95.76 0.0911
2021-07-22 2021-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,119 1,318 73.18 1,227 87.04 0.0480
2021-04-13 2021-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,801 950 111.63 656 124.66 0.0277
2021-01-25 2020-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 851 26 3.15 292 14.96 0.0130
2020-10-13 2020-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 825 -1 -0.12 254 8.55 0.0131
2020-07-29 2020-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 826 -22 -2.59 234 16.42 0.0136
2020-04-21 2020-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 848 -29 -3.31 201 -22.39 0.0162
2020-01-14 2019-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 877 877 259 0.0158
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.