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

SecurityVOO / Vanguard Index Funds - Vanguard S&P 500 ETF
InstitutionBokf, Na
Latest Disclosed Ownership608,453 shares
Latest Disclosed Value $ 363,581,090
Bokf, Na reports 2.66% increase in ownership of VOO / Vanguard Index Funds - Vanguard S&P 500 ETF

On May 8, 2026 - Bokf, Na filed a 13F-HR form disclosing ownership of 608,453 shares of Vanguard Index Funds - Vanguard S&P 500 ETF (US:VOO) valued at $363,581,090 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 592,711 shares of Vanguard Index Funds - Vanguard S&P 500 ETF. This represents a change in shares of 2.66% during the quarter. The current value of the position is $412,525,049 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)
2026-05-08 2026-03-31 13F VANGUARD S&P 500 ETF common 922908363 608,453 15,742 2.66 363,581 -2.19 5.5598
2026-02-03 2025-12-31 13F VANGUARD S&P 500 ETF common 922908363 592,711 -577 -0.10 371,707 2.31 5.6887
2025-11-13 2025-09-30 13F VANGUARD S&P 500 ETF common 922908363 593,288 -37,771 -5.99 363,318 1.35 5.4659
2025-08-12 2025-06-30 13F VANGUARD S&P 500 ETF common 922908363 631,059 58,489 10.22 358,460 21.82 5.8053
2025-05-13 2025-03-31 13F VANGUARD S&P 500 ETF common 922908363 572,570 31,658 5.85 294,249 1.89 5.2030
2025-02-14 2024-12-31 13F VANGUARD S&P 500 ETF common 922908363 540,912 449,035 488.73 288,788 502.33 4.8786
2024-11-14 2024-09-30 13F VANGUARD S&P 500 ETF common 922908363 91,877 4,903 5.64 47,945 10.22 0.8508
2024-08-08 2024-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 86,974 2,766 3.28 43,498 7.60 0.7808
2024-05-15 2024-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 84,208 5,844 7.46 40,426 18.10 0.7361
2024-02-14 2023-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 78,364 1,739 2.27 34,229 16.28 0.6703
2023-11-14 2023-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 76,625 5,284 7.41 29,437 1.31 0.6488
2023-08-21 2023-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 71,341 -419 -0.58 29,056 7.67 0.5918
2023-05-11 2023-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 71,760 -5,596 -7.23 26,987 -0.71 0.5647
2023-02-13 2022-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 77,356 291 0.38 27,178 7.42 0.5016
2022-11-14 2022-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 77,065 5,009 6.95 25,300 1.22 0.5119
2022-08-11 2022-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 72,056 7,954 12.41 24,995 -6.08 0.4792
2022-05-13 2022-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 64,102 -43,011 -40.15 26,613 -43.09 0.4386
2022-03-11 2021-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 107,113 52,827 97.31 46,763 118.41 0.7236
2021-11-10 2021-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 54,286 7,363 15.69 21,411 25.25 0.3681
2021-04-21 2021-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 46,923 7,991 20.53 17,094 27.76 0.3109
2021-02-12 2020-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 38,932 4,443 12.88 13,380 26.11 0.2553
2020-10-30 2020-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 34,489 -13,359 -27.92 10,610 -21.77 0.2331
2020-08-12 2020-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 47,848 1,789 3.88 13,562 24.33 0.3190
2020-05-13 2020-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 46,059 13,579 41.81 10,908 13.54 0.3143
2020-02-12 2019-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 32,480 -10 -0.03 9,607 8.47 0.2171
2019-11-13 2019-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 32,490 -131 -0.40 8,857 0.88 0.2133
2019-08-14 2019-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 32,621 519 1.62 8,780 5.39 0.2109
2019-05-15 2019-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 32,102 4,126 14.75 8,331 29.58 0.1994
2019-02-13 2018-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 27,976 3,161 12.74 6,429 -2.99 0.1839
2018-11-13 2018-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 24,815 9,065 57.56 6,627 68.63 0.1663
2018-08-13 2018-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 15,750 3,491 28.48 3,930 32.41 0.1058
2018-05-14 2018-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 12,259 4,931 67.29 2,968 65.16 0.0843
2018-02-14 2017-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 7,328 2,051 38.87 1,797 47.54 0.0495
2017-11-14 2017-09-30 13F VANGUARD S&P 500 ETF 922908363 5,277 534 11.26 1,218 15.56 0.0354
2017-08-14 2017-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,743 1,403 42.01 1,054 45.98 0.0332
2017-05-15 2017-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,340 496 17.44 722 23.63 0.0225
2017-02-14 2016-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,844 -376 -11.68 584 -8.75 0.0192
2016-11-10 2016-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,220 3,220 640 0.0212
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.