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

SecurityVOO / Vanguard Index Funds - Vanguard S&P 500 ETF
InstitutionMillburn Ridgefield Corp
Latest Disclosed Ownership255,244 shares
Latest Disclosed Value $ 152,521,052
Millburn Ridgefield Corp reports 11.97% increase in ownership of VOO / Vanguard Index Funds - Vanguard S&P 500 ETF

On April 22, 2026 - Millburn Ridgefield Corp filed a 13F-HR form disclosing ownership of 255,244 shares of Vanguard Index Funds - Vanguard S&P 500 ETF (US:VOO) valued at $152,521,052 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 227,957 shares of Vanguard Index Funds - Vanguard S&P 500 ETF. This represents a change in shares of 11.97% during the quarter. The current value of the position is $176,975,980 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)
2026-04-22 2026-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 255,244 27,287 11.97 152,521 6.69 3.2812
2026-02-02 2025-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 227,957 -1,607 -0.70 142,959 1.69 3.4057
2025-10-30 2025-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 229,564 -16,673 -6.77 140,580 0.51 3.3558
2025-07-29 2025-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 246,237 -17,484 -6.63 139,870 3.20 3.3673
2025-04-15 2025-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 263,721 12,962 5.17 135,529 0.31 3.2837
2025-02-04 2024-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 250,759 12,113 5.08 135,111 7.29 3.3805
2024-11-14 2024-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 238,646 -14,834 -5.85 125,926 -0.67 3.3009
2024-08-14 2024-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 253,480 0 0.00 126,773 4.04 3.3815
2024-04-26 2024-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 253,480 15,277 6.41 121,848 17.11 3.3741
2024-02-06 2023-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 238,203 -23,009 -8.81 104,047 1.43 3.1873
2023-11-02 2023-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 261,212 22,069 9.23 102,578 5.32 3.3262
2023-07-21 2023-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 239,143 -5,092 -2.08 97,398 6.04 3.3291
2023-04-25 2023-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 244,235 7,515 3.17 91,849 110,561.45 3.2418
2023-01-20 2022-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 236,720 19,569 9.01 83 -99.88 3.1824
2022-11-03 2022-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 217,151 38,817 21.77 71,291 15.25 3.2250
2022-07-19 2022-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 178,334 43,580 32.34 61,860 10.57 3.3261
2022-04-21 2022-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 134,754 13,550 11.18 55,946 5.73 3.3132
2022-01-27 2021-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 121,204 0 0.00 52,914 10.69 3.3751
2021-10-21 2021-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 121,204 -151 -0.12 47,803 0.10 3.3580
2021-07-16 2021-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 121,355 6,278 5.46 47,756 13.91 3.2863
2021-04-16 2021-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 115,077 -6,675 -5.48 41,923 0.19 3.2412
2021-03-08 2020-12-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 121,752 -21,410 -14.96 41,845 -4.99 3.1901
2021-01-28 2020-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 121,752 -21,410 41,845 3,200,414.2297
2021-03-08 2020-09-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 143,162 -34,384 -19.37 44,044 -12.48 3.2700
2020-10-29 2020-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 143,162 -34,384 44,044 3,277,402.7826
2021-03-08 2020-06-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 177,546 -54,547 -23.50 50,322 -8.45 3.3408
2020-07-28 2020-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 177,546 -54,547 50,322 3,345,657.4335
2021-03-11 2020-03-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 232,093 -33,969 -12.77 54,964 -30.16 3.2857
2020-04-28 2020-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 232,093 -33,969 54,964 3,286,123.6547
2020-01-30 2019-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 266,062 32,000 13.67 78,701 23.35 3.0572
2019-10-31 2019-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 234,062 22,265 10.51 63,805 11.93 2.7010
2019-07-18 2019-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 211,797 12,724 6.39 57,005 10.33 2.4184
2019-04-18 2019-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 199,073 -18,567 -8.53 51,667 3.30 2.3964
2019-01-28 2018-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 217,640 15,577 7.71 50,016 -7.31 2.5010
2018-11-01 2018-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 202,063 -715 -0.35 53,961 6.65 2.5148
2018-08-07 2018-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 202,778 0 0.00 50,595 3.07 2.4978
2018-05-01 2018-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 202,778 10,355 5.38 49,088 4.00 2.4330
2018-01-22 2017-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 192,423 58,306 43.47 47,199 52.51 2.4787
2017-10-23 2017-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 134,117 68,840 105.46 30,949 113.52 2.0013
2017-07-21 2017-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 65,277 65,277 14,495 1.0065
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.