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

SecurityVOO / Vanguard Index Funds - Vanguard S&P 500 ETF
InstitutionMorgan Stanley
Latest Disclosed Ownership24,365,727 shares
Latest Disclosed Value $ 14,559,741,819
Morgan Stanley reports 0.82% decrease in ownership of VOO / Vanguard Index Funds - Vanguard S&P 500 ETF

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 24,365,727 shares of Vanguard Index Funds - Vanguard S&P 500 ETF (US:VOO) valued at $14,559,740,169 USD as of March 31, 2026. The current value of the position is $16,894,220,473 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 24,365,727 -202,645 -0.82 14,559,742 -5.50 0.8772
2026-05-27 2025-12-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 24,568,372 -881,557 -3.46 15,407,564 -1.14 0.9199
2026-02-13 2025-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 24,568,372 -881,557 15,407,564
2026-05-27 2025-09-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 25,449,929 2,130,431 9.14 15,585,028 17.66 0.9436
2025-11-14 2025-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 25,449,929 2,130,431 15,585,028 0.9436
2025-08-15 2025-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 23,319,498 -622,698 -2.60 13,246,176 7.66 0.8629
2025-05-15 2025-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 23,942,196 1,134,691 4.98 12,304,135 0.12 0.8797
2025-05-15 2024-12-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 22,807,505 784,274 3.56 12,288,913 5.75 0.8610
2025-02-14 2024-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 22,807,505 784,274 12,288,913 0.8609
2025-05-14 2024-09-30 13F/A-2 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 22,023,231 2,122,737 10.67 11,620,999 16.76 0.8427
2025-02-14 2024-09-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 22,023,231 2,122,737 11,620,999 0.8426
2024-11-14 2024-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 22,023,231 2,122,737 11,620,999 0.8425
2025-05-14 2024-06-30 13F/A-2 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 19,900,494 385,856 1.98 9,952,835 6.10 0.7701
2024-10-17 2024-06-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 19,900,494 385,856 9,952,835 0.7700
2024-08-14 2024-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 19,900,494 385,856 9,952,835 0.7702
2024-10-17 2024-03-31 13F/A-2 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 19,514,638 1,410,460 7.79 9,380,687 18.62 0.7526
2024-08-16 2024-03-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 19,514,638 1,410,460 9,380,687 0.7528
2024-05-15 2024-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 19,514,638 1,410,460 9,380,687 0.7528
2024-08-16 2023-12-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 18,104,178 985,378 5.76 7,907,906 17.63 0.6969
2024-02-13 2023-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 18,104,178 985,378 7,907,906 0.6969
2023-11-15 2023-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 17,118,800 -256,938 -1.48 6,722,553 -5.01 0.6836
2023-08-14 2023-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 17,375,738 65,963 0.38 7,076,792 8.71 0.6975
2023-05-15 2023-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 17,309,775 -318,596 -1.81 6,509,688 5.10 0.6980
2023-02-14 2022-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 17,628,371 -102,283 -0.58 6,193,553 6.40 0.7034
2022-11-14 2022-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 17,730,654 12,098 0.07 5,820,974 -5.29 0.7934
2022-10-27 2022-06-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 17,718,556 10,711,074 152.85 6,146,213 111.26 0.7978
2022-08-15 2022-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 17,718,556 10,711,074 6,146,213 0.7978
2022-10-27 2022-03-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 7,007,482 -714,192 -9.25 2,909,298 -13.70 0.3924
2022-05-13 2022-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 7,007,482 -714,192 2,909,298 0.3924
2022-02-14 2021-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 7,721,674 1,116,569 16.90 3,371,052 29.40 0.4162
2021-11-15 2021-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,605,105 383,170 6.16 2,605,053 6.40 0.3509
2021-08-23 2021-06-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,221,935 66,274 1.08 2,448,457 9.18 0.3230
2021-08-16 2021-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,221,935 66,274 2,448,457 0.0671
2021-05-17 2021-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,155,661 -102,390 -1.64 2,242,507 4.26 0.3294
2021-02-16 2020-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,258,051 -143,692 -2.24 2,150,830 9.21 0.3322
2020-11-13 2020-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,401,743 775,040 13.77 1,969,497 23.50 0.3809
2020-08-14 2020-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 5,626,703 -584,344 -9.41 1,594,776 8.42 0.3530
2020-05-26 2020-03-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,211,047 1,121,516 22.04 1,470,900 -2.30 0.3997
2020-05-15 2020-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 6,211,047 1,121,516 1,470,900 398,998.3847
2020-02-14 2019-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 5,089,531 193,835 3.96 1,505,483 12.81 0.3501
2019-11-14 2019-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,895,696 258,919 5.58 1,334,566 6.94 0.3533
2019-08-14 2019-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,636,777 109,367 2.42 1,247,988 6.21 0.3321
2019-05-15 2019-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,527,410 -366,189 -7.48 1,175,044 4.49 0.3326
2019-02-14 2018-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,893,599 603,791 14.08 1,124,598 -1.83 0.3365
2019-04-23 2018-09-30 13F/A-2 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,289,808 -203,750 -4.53 1,145,592 2.18 0.2867
2018-11-20 2018-09-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,289,808 0 1,145,592 0.2867
2018-11-14 2018-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,289,808 -203,750 1,145,592
2019-04-23 2018-06-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,493,558 373,396 9.06 1,121,188 12.41 0.3029
2018-08-14 2018-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,493,558 373,396 1,121,188
2019-04-23 2018-03-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,120,162 -155,394 -3.63 997,409 -4.90 0.2768
2018-05-14 2018-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,120,162 -155,394 997,409
2019-04-23 2017-12-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,275,556 205,609 5.05 1,048,752 11.67 0.2871
2018-02-14 2017-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,275,556 205,609 1,048,752
2017-11-14 2017-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,069,947 60,666 1.51 939,180 5.49 0.2813
2017-08-11 2017-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 4,009,281 197,093 5.17 890,301 7.95 0.2690
2017-05-22 2017-03-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,812,188 282,077 7.99 824,768 13.80 0.2535
2017-05-12 2017-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,812,188 824,768
2017-02-22 2016-12-31 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,530,111 639,568 22.13 724,767 26.20 0.2372
2017-02-13 2016-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 3,530,111 724,767
2016-11-10 2016-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,890,543 4,138 0.14 574,322 3.52 0.1962
2016-08-12 2016-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,886,405 275,165 10.54 554,767 12.67 0.2004
2016-05-12 2016-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,611,240 118,630 4.76 492,375 5.67 0.1895
2016-02-09 2015-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,492,610 312,908 14.36 465,944 21.66 0.1687
2016-02-08 2015-09-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,179,702 -178,281 -7.56 382,995 -13.99 0.1415
2015-11-09 2015-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,179,702 382,995
2015-08-12 2015-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,357,983 342,816 17.01 445,282 16.79 0.1543
2015-05-14 2015-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 2,015,167 244,081 13.78 381,269 14.26 0.1404
2015-02-13 2014-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,771,086 492,202 38.49 333,672 44.48 0.1220
2014-12-16 2014-09-30 13F/A-1 VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,278,884 155,518 13.84 230,953 19.98 0.0888
2014-11-14 2014-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,278,884 230,953
2014-05-13 2014-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,123,366 175,620 18.53 192,488 20.07 0.0806
2014-02-13 2013-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 947,746 947,746 160,311 0.0682
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.