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

SecurityVOO / Vanguard Index Funds - Vanguard S&P 500 ETF
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership5,258,941 shares
Latest Disclosed Value $ 3,142,479,657
Mercer Global Advisors Inc /adv reports 2.30% decrease in ownership of VOO / Vanguard Index Funds - Vanguard S&P 500 ETF

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 5,258,941 shares of Vanguard Index Funds - Vanguard S&P 500 ETF (US:VOO) valued at $3,142,480,195 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 5,382,675 shares of Vanguard Index Funds - Vanguard S&P 500 ETF. This represents a change in shares of -2.30% during the quarter. The current value of the position is $3,565,561,998 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)
2026-05-15 2026-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 5,258,941 -123,734 -2.30 3,142,480 0.86 4.6501
2026-02-17 2025-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 5,382,675 465,946 9.48 3,115,689 3.48 4.7494
2025-11-14 2025-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,916,729 280,218 6.04 3,010,898 14.32 5.0255
2025-08-14 2025-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,636,511 352,441 8.23 2,633,677 19.62 5.3641
2025-05-15 2025-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,284,070 302,423 7.60 2,201,627 2.62 5.0504
2025-02-14 2024-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,981,647 -180,539 -4.34 2,145,351 -1.42 5.2343
2024-11-14 2024-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,162,186 194,382 4.90 2,176,270 14.05 5.0930
2024-08-12 2024-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,967,804 295,058 8.03 1,908,221 108,014.45 5.2024
2024-05-15 2024-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,672,746 431,734 13.32 1,766 24.73 5.0196
2024-02-15 2023-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,241,012 383,345 13.41 1,416 26.11 4.2583
2023-11-15 2023-09-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,857,667 662,473 30.18 1,122 25.50 4.2616
2023-11-14 2023-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,857,667 662,473 1,122 4.2605
2023-08-14 2023-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,195,194 1,022,833 87.25 894 103.18 3.5486
2023-05-16 2023-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,172,361 323,546 38.12 441 47.65 2.0025
2023-02-09 2022-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 848,815 674,015 385.59 298 -99.48 1.4935
2022-11-15 2022-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 174,800 33,533 23.74 57,382 17.10 0.3405
2022-08-10 2022-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 141,267 54,159 62.17 49,003 35.50 0.2999
2022-05-10 2022-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 87,108 14,051 19.23 36,165 13.39 0.2130
2022-02-04 2021-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 73,057 4,034 5.84 31,895 17.16 0.1969
2021-11-10 2021-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 69,023 41,655 152.20 27,223 152.77 0.1902
2021-08-10 2021-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 27,368 2,997 12.30 10,770 21.31 0.0828
2021-08-10 2021-03-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 24,371 10,146 71.33 8,878 81.59 0.0808
2021-05-11 2021-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 24,371 10,146 8,878 0.0850
2021-02-12 2020-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 14,225 1,836 14.82 4,889 28.25 0.0611
2020-12-10 2020-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 12,389 -15,923 -56.24 3,812 -52.49 0.0573
2020-08-10 2020-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 28,312 979 3.58 8,024 23.96 0.1457
2020-05-18 2020-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 27,333 3,273 13.60 6,473 -9.05 0.1425
2020-02-13 2019-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS COM 922908363 24,060 2,106 9.59 7,117 18.93 0.1421
2019-11-12 2019-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS COM 922908363 21,954 1,663 8.20 5,984 9.58 0.1407
2019-08-14 2019-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS COM 922908363 20,291 2,696 15.32 5,461 19.58 0.1447
2019-04-23 2019-03-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS COM 922908363 17,595 17,595 4,567 0.1642
2019-04-12 2019-03-31 13F VANGUARD INDEX FDS S&P 5 COM 922908363 16,994 3,905 0.2081
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.