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

SecurityVOO / Vanguard Index Funds - Vanguard S&P 500 ETF
InstitutionWASHINGTON TRUST Co
Latest Disclosed Ownership176,417 shares
Latest Disclosed Value $ 105,417,978
WASHINGTON TRUST Co reports 4.15% increase in ownership of VOO / Vanguard Index Funds - Vanguard S&P 500 ETF

On April 6, 2026 - WASHINGTON TRUST Co filed a 13F-HR form disclosing ownership of 176,417 shares of Vanguard Index Funds - Vanguard S&P 500 ETF (US:VOO) valued at $105,417,978 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 169,390 shares of Vanguard Index Funds - Vanguard S&P 500 ETF. This represents a change in shares of 4.15% during the quarter. The current value of the position is $119,610,726 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)
2026-04-06 2026-03-31 13F VANGUARD S&P 500 ETF Equities 922908363 176,417 7,027 4.15 105,418 -0.76 3.4289
2026-02-10 2025-12-31 13F VANGUARD S&P 500 ETF Equities 922908363 169,390 2,716 1.63 106,230 4.08 3.3748
2025-11-12 2025-09-30 13F VANGUARD S&P 500 ETF Equities 922908363 166,674 4,002 2.46 102,068 10.46 3.3488
2025-08-08 2025-06-30 13F VANGUARD S&P 500 ETF Equities 922908363 162,672 4,426 2.80 92,403 13.62 3.2667
2025-04-25 2025-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 158,246 9,433 6.34 81,324 1.43 3.1172
2025-01-30 2024-12-31 13F VANGUARD S&P 500 ETF SHS 922908363 148,813 4,418 3.06 80,182 5.24 2.8762
2024-10-25 2024-09-30 13F VANGUARD S&P 500 ETF SHS 922908363 144,395 5,679 4.09 76,193 9.82 2.6711
2024-07-15 2024-06-30 13F VANGUARD S&P 500 ETF SHS 922908363 138,716 5,427 4.07 69,376 8.28 2.5377
2024-04-23 2024-03-31 13F VANGUARD S&P 500 ETF SHS 922908363 133,289 4,242 3.29 64,072 13.67 2.3538
2024-01-18 2023-12-31 13F VANGUARD S&P 500 ETF SHS 922908363 129,047 -19,160 -12.93 56,368 -3.15 2.2306
2023-10-18 2023-09-30 13F VANGUARD S&P 500 ETF SHS 922908363 148,207 658 0.45 58,201 -3.15 2.5602
2023-07-27 2023-06-30 13F VANGUARD S&P 500 ETF SHS 922908363 147,549 -654 -0.44 60,094 7.82 2.5341
2023-05-10 2023-03-31 13F/A-1 VANGUARD S&P 500 ETF SHS 922908363 148,203 8,199 5.86 55,735 13.31 2.5108
2023-05-04 2023-03-31 13F VANGUARD S&P 500 ETF SHS 922908363 148 -139,856 56 2.3501
2023-07-27 2022-12-31 13F/A-1 VANGUARD S&P 500 ETF SHS 922908363 140,004 72,105 106.19 49,189 120.67 2.2916
2023-02-08 2022-12-31 13F VANGUARD S&P 500 ETF SHS 922908363 140,004 72,105 49 0.0021
2022-10-14 2022-09-30 13F VANGUARD S&P 500 ETF SHS 922908363 67,899 7,031 11.55 22,291 5.57 1.1226
2022-07-25 2022-06-30 13F VANGUARD S&P 500 ETF SHS 922908363 60,868 -1,758 -2.81 21,114 -18.79 0.9913
2022-05-05 2022-03-31 13F VANGUARD S&P 500 ETF SHS 922908363 62,626 2,151 3.56 26,000 -1.52 1.0287
2022-02-09 2021-12-31 13F/A-1 VANGUARD S&P 500 ETF SHS 922908363 60,475 -1,232 -2.00 26,402 8.49 0.9905
2022-02-09 2021-12-31 13F VANGUARD S&P 500 ETF SHS 922908363 60,475 -1,232 26,402 0.9239
2021-11-09 2021-09-30 13F VANGUARD S&P 500 ETF SHS 922908363 61,707 -8,357 -11.93 24,337 -11.73 0.6862
2021-08-05 2021-06-30 13F VANGUARD S&P 500 ETF SHS 922908363 70,064 -9,260 -11.67 27,571 -4.59 0.7776
2021-04-28 2021-03-31 13F VANGUARD S&P 500 ETF SHS 922908363 79,324 354 0.45 28,898 6.47 0.8870
2021-02-09 2020-12-31 13F VANGUARD S&P 500 ETF SHS 922908363 78,970 -13,304 -14.42 27,142 -4.39 0.8761
2020-11-05 2020-09-30 13F VANGUARD S&P 500 ETF SHS 922908363 92,274 92,217 161,784.21 28,389 177,331.25 1.0487
2020-08-04 2020-06-30 13F VANGUARD S&P 500 ETF SHS 922908363 57 -30,474 -99.81 16 -99.78 0.0007
2020-05-07 2020-03-31 13F VANGUARD S&P 500 ETF SHS 922908363 30,531 1,271 4.34 7,230 -16.46 0.3447
2020-02-12 2019-12-31 13F VANGUARD S&P 500 ETF SHS 922908363 29,260 2,583 9.68 8,655 16.47 0.3410
2019-11-06 2019-09-30 13F VANGUARD S&P 500 ETF SHS 922908363 26,677 741 2.86 7,431 6.45 0.3978
2019-08-07 2019-06-30 13F VANGUARD S&P 500 ETF SHS 922908363 25,936 1,675 6.90 6,981 8.96 0.3823
2019-05-13 2019-03-31 13F VANGUARD S&P 500 ETF SHS 922908363 24,261 10,881 81.32 6,407 108.36 0.3584
2019-02-11 2018-12-31 13F VANGUARD S&P 500 ETF SHS 922908363 13,380 0 0.00 3,075 -13.94 0.1956
2018-11-13 2018-09-30 13F VANGUARD S&P 500 ETF SHS 922908363 13,380 2,372 21.55 3,573 30.07 0.1913
2018-08-10 2018-06-30 13F VANGUARD S&P 500 ETF SHS 922908363 11,008 11,008 2,747 0.1472
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.