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

SecurityVOO / Vanguard Index Funds - Vanguard S&P 500 ETF
InstitutionGts Securities Llc
Latest Disclosed Ownership73,438 shares
Latest Disclosed Value $ 43,883,809
Gts Securities Llc ownership in VOO / Vanguard Index Funds - Vanguard S&P 500 ETF

On May 14, 2026 - Gts Securities Llc filed a 13F-HR form disclosing ownership of 73,438 shares of Vanguard Index Funds - Vanguard S&P 500 ETF (US:VOO) valued at $43,882,877 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 40,955 shares of Vanguard Index Funds - Vanguard S&P 500 ETF. This represents a change in shares of 79.31% during the quarter. The current value of the position is $49,790,964 USD.

Gts Securities Llc has a history of taking positions in derivatives of the underlying security (VOO) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

VOO / Vanguard Index Funds - Vanguard S&P 500 ETF Historical Put/Call Ratio
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)
2026-05-14 2026-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 73,438 32,483 79.31 43,884 70.86 1.5514
2026-02-13 2025-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 40,955 8,821 27.45 25,684 30.50 0.8759
2025-11-14 2025-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 32,134 -6,963 -17.81 19,682 -11.38 0.7558
2025-08-08 2025-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 39,097 -33,840 -46.40 22,208 -40.75 0.9905
2025-05-15 2025-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 72,937 57,695 378.53 37,483 356.44 1.6224
2025-02-18 2024-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 15,242 15,242 8,213 0.4000
2024-08-14 2024-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 0 -51,068 -100.00 0 -100.00
2024-05-15 2024-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 51,068 18,336 56.02 24,548 71.70 0.0450
2024-02-15 2023-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 32,732 31,284 2,160.50 14,297 2,417.08 0.0244
2023-11-15 2023-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 1,448 -3,876 -72.80 569 -73.80 0.0010
2023-08-16 2023-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 5,324 5,324 2,168 0.0685
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-02-18 2024-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-13 2024-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS Call 63,400 31.81 33,454 39.07 n/a n/a n/a
2024-08-14 2024-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS Call 48,100 -15.32 24,056 -11.89 n/a n/a n/a
2024-05-15 2024-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS Call 56,800 -27.37 27,304 -20.07 n/a n/a n/a
2024-02-15 2023-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS Call 78,200 -9.49 34,158 0.67 n/a n/a n/a
2023-11-15 2023-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS Call 86,400 33,929 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-02-18 2024-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-13 2024-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS Put 19,100 26.49 10,078 33.47 n/a n/a n/a
2024-08-14 2024-06-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS Put 15,100 -30.09 7,552 -27.28 n/a n/a n/a
2024-05-15 2024-03-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS Put 21,600 -12.90 10,383 -4.15 n/a n/a n/a
2024-02-15 2023-12-31 13F VANGUARD INDEX FDS S&P 500 ETF SHS Put 24,800 -13.59 10,833 -3.89 n/a n/a n/a
2023-11-15 2023-09-30 13F VANGUARD INDEX FDS S&P 500 ETF SHS Put 28,700 11,270 n/a n/a n/a
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.