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

SecurityVOO / Vanguard Index Funds - Vanguard S&P 500 ETF
InstitutionBanco Santander, S.A.
Latest Disclosed Ownership209,633 shares
Latest Disclosed Value $ 125,266,199
Banco Santander, S.A. reports 14.70% decrease in ownership of VOO / Vanguard Index Funds - Vanguard S&P 500 ETF

On May 8, 2026 - Banco Santander, S.A. filed a 13F-HR form disclosing ownership of 209,633 shares of Vanguard Index Funds - Vanguard S&P 500 ETF (US:VOO) valued at $125,266,199 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 245,748 shares of Vanguard Index Funds - Vanguard S&P 500 ETF. This represents a change in shares of -14.70% during the quarter. The current value of the position is $145,351,137 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 INDEX FDS S&P 500 ETF SHS 922908363 209,633 -36,115 -14.70 125,266 -18.72 0.5919
2026-02-13 2025-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 245,748 25,205 11.43 154,116 14.11 1.1540
2025-11-12 2025-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 220,543 40,935 22.79 135,056 32.38 1.1991
2025-08-01 2025-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 179,608 -53,867 -23.07 102,023 -14.97 0.9687
2025-05-09 2025-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 233,475 185,205 383.69 119,985 361.34 1.3241
2025-02-07 2024-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 48,270 -70,574 -59.38 26,008 -58.53 0.3129
2024-11-12 2024-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 118,844 -13,820 -10.42 62,710 -5.48 0.7391
2024-07-29 2024-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 132,664 9,317 7.55 66,349 11.90 0.8223
2024-05-10 2024-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 123,347 5,668 4.82 59,293 15.35 0.7148
2024-02-09 2023-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 117,679 30,131 34.42 51,402 49.51 0.6074
2023-11-08 2023-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 87,548 -12,368 -12.38 34,380 -15.51 0.4874
2023-08-14 2023-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 99,916 29,807 42.52 40,694 54.34 0.5338
2023-05-10 2023-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 70,109 -7,083 -9.18 26,366 -2.78 0.3946
2023-02-13 2022-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 77,192 -10,793 -12.27 27,121 -6.11 0.4073
2022-11-08 2022-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 87,985 -84 -0.10 28,884 -5.45 0.3853
2022-07-28 2022-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 88,069 5,076 6.12 30,549 -11.34 0.4071
2022-05-09 2022-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 82,993 -151,645 -64.63 34,457 -66.36 0.3699
2022-02-09 2021-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 234,638 8,306 3.67 102,436 14.75 0.5520
2021-11-08 2021-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 226,332 22,478 11.03 89,265 11.28 0.4796
2021-07-29 2021-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 203,854 68,292 50.38 80,220 62.44 0.4482
2021-05-10 2021-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 135,562 -3,776 -2.71 49,385 3.12 0.3480
2021-02-12 2020-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 139,338 -34,399 -19.80 47,889 -10.40 0.3433
2020-11-09 2020-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 173,737 46,837 36.91 53,450 48.61 0.7029
2020-08-05 2020-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 126,900 -180,155 -58.67 35,967 -50.54 0.4665
2020-05-11 2020-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 307,055 46,276 17.75 72,717 -5.73 0.8325
2020-02-07 2019-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 260,779 -82,374 -24.01 77,139 -17.54 0.7125
2019-11-06 2019-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 343,153 -41,653 -10.82 93,544 -9.68 0.9098
2019-08-07 2019-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 384,806 57,434 17.54 103,571 22.98 1.0509
2019-05-13 2019-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 327,372 -108,769 -24.94 84,221 -15.97 0.9508
2019-02-12 2018-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 436,141 129,379 42.18 100,229 22.35 1.2666
2018-11-13 2018-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 306,762 -2,320 -0.75 81,921 6.23 0.9349
2018-08-14 2018-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 309,082 19,554 6.75 77,119 11.62 0.8984
2018-05-14 2018-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 289,528 247,446 588.01 69,093 569.38 0.8082
2018-02-14 2017-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 42,082 -2,291 -5.16 10,322 0.80 0.1478
2017-11-13 2017-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 44,373 1,434 3.34 10,240 6.58 0.1689
2017-08-11 2017-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 42,939 42,939 9,608 0.1886
2017-05-12 2017-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 0 -90,305 -100.00 0 -100.00
2017-02-17 2016-12-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 90,305 90,305 18,541 0.4886
2017-02-14 2016-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 90,305 18,541
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.