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

SecurityVOO / Vanguard Index Funds - Vanguard S&P 500 ETF
InstitutionBailard, Inc.
Latest Disclosed Ownership65,575 shares
Latest Disclosed Value $ 39,184,730
Bailard, Inc. reports 2.85% decrease in ownership of VOO / Vanguard Index Funds - Vanguard S&P 500 ETF

On May 11, 2026 - Bailard, Inc. filed a 13F-HR form disclosing ownership of 65,575 shares of Vanguard Index Funds - Vanguard S&P 500 ETF (US:VOO) valued at $39,184,341 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 67,501 shares of Vanguard Index Funds - Vanguard S&P 500 ETF. This represents a change in shares of -2.85% during the quarter. The current value of the position is $45,467,082 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-11 2026-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 65,575 -1,926 -2.85 39,185 -7.44 0.9008
2026-02-04 2025-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 67,501 -32,986 -32.83 42,332 -31.21 0.9373
2025-10-30 2025-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 100,487 2,042 2.07 61,536 10.04 1.3371
2025-08-08 2025-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 98,445 598 0.61 55,920 11.21 1.3035
2025-05-02 2025-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 97,847 8,069 8.99 50,285 3.95 1.2979
2025-02-05 2024-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 89,778 25,723 40.16 48,373 43.12 1.2364
2024-10-30 2024-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 64,055 -124 -0.19 33,800 5.30 0.8799
2024-07-25 2024-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 64,179 -1,414 -2.16 32,098 1.80 0.8843
2024-05-08 2024-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 65,593 -4,330 -6.19 31,531 3.23 0.8703
2024-02-02 2023-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 69,923 -236 -0.34 30,542 10.86 0.9048
2023-10-24 2023-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 70,159 50,548 257.75 27,551 244.95 0.9126
2023-07-20 2023-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 19,611 203 1.05 7,987 9.44 0.2793
2023-05-08 2023-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 19,408 -1,893 -8.89 7,299 -2.47 0.2615
2023-02-02 2022-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 21,301 1,848 9.50 7,484 17.18 0.2851
2022-10-18 2022-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 19,453 4,506 30.15 6,386 23.16 0.2641
2022-07-27 2022-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 14,947 871 6.19 5,185 -11.28 0.2041
2022-04-25 2022-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 14,076 904 6.86 5,844 1.62 0.1965
2022-02-10 2021-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 13,172 -142 -1.07 5,751 9.52 0.1834
2021-11-15 2021-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 13,314 -66 -0.49 5,251 -0.27 0.1795
2021-08-13 2021-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 13,380 511 3.97 5,265 12.31 0.1819
2021-05-13 2021-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 12,869 2,146 20.01 4,688 27.22 0.1738
2021-02-03 2020-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 10,723 -246 -2.24 3,685 9.19 0.1681
2020-11-10 2020-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 10,969 1,313 13.60 3,375 23.31 0.1748
2020-08-12 2020-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 9,656 3,135 48.08 2,737 77.27 0.1529
2020-04-16 2020-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,521 -1,899 -22.55 1,544 -38.02 0.1100
2020-01-31 2019-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 8,420 2,540 43.20 2,491 55.40 0.1404
2019-10-18 2019-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 5,880 -45 -0.76 1,603 0.50 0.0969
2019-07-26 2019-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 5,925 7 0.12 1,595 3.84 0.0975
2019-04-24 2019-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 5,918 176 3.07 1,536 16.36 0.0953
2019-02-05 2018-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 5,742 4,116 253.14 1,320 204.15 0.0892
2018-11-13 2018-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,626 655 67.46 434 79.34 0.0254
2018-08-08 2018-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 971 971 242 0.0144
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.