Vanguard Index Funds - Vanguard Small-Cap Growth ETF
US ˙ ARCA ˙ US9229085959

SecurityVBK / Vanguard Index Funds - Vanguard Small-Cap Growth ETF
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Citadel Advisors Llc ownership in VBK / Vanguard Index Funds - Vanguard Small-Cap Growth ETF

On August 14, 2025 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 0 shares of Vanguard Index Funds - Vanguard Small-Cap Growth ETF (US:VBK) valued at $0 USD as of June 30, 2025. The entity filed a previous 13F-HR on May 15, 2025 disclosing 17,323 shares of Vanguard Index Funds - Vanguard Small-Cap Growth ETF. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (VBK) in the form of stock options. The firm currently holds call options representing 7,000 of underlying shares valued at $2,115,750 USD and put options representing 2,500 of underlying shares valued at $755,625 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.

VBK / Vanguard Index Funds - Vanguard Small-Cap Growth 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)
2025-08-14 2025-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 0 -17,323 -100.00 0 -100.00
2025-05-15 2025-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 17,323 17,323 4,361 0.0008
2025-02-14 2024-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 0 -1,181 -100.00 0 -100.00
2024-11-14 2024-09-30 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 1,181 -9,266 -88.70 316 -87.94 0.0001
2024-08-14 2024-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 10,447 6,634 173.98 2,613 162.88 0.0005
2024-05-15 2024-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 3,813 837 28.12 994 38.25 0.0002
2024-02-14 2023-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 2,976 -5,496 -64.87 720 -60.36 0.0001
2023-11-14 2023-09-30 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 8,472 5,666 201.92 1,815 181.68 0.0004
2023-08-14 2023-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 2,806 -56 -1.96 645 4.04 0.0001
2023-05-15 2023-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 2,862 -16,086 -84.90 619 -83.71 0.0001
2023-02-14 2022-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 18,948 -4,447 -19.01 3,800 -16.78 0.0009
2022-11-14 2022-09-30 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 23,395 18,566 384.47 4,565 380.02 0.0010
2022-08-15 2022-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 4,829 -21,325 -81.54 951 -85.35 0.0002
2022-05-16 2022-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 26,154 21,657 481.59 6,490 412.23 0.0013
2022-02-14 2021-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 4,497 4,497 1,267 0.0003
2021-05-21 2021-03-31 13F/A-1 VANGUARD INDEX FDS SML CP GRW ETF 922908595 0 -2,386 -100.00 0 -100.00
2021-02-16 2020-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF 922908595 2,386 2,386 639 0.0002
2020-08-14 2020-06-30 13F VANGUARD INDEX FDS Cmn 922908595 0 -14,025 -100.00 0 -100.00
2020-05-15 2020-03-31 13F VANGUARD INDEX FDS Cmn 922908595 14,025 14,025 2,108 0.0009
2018-08-14 2018-06-30 13F/A-1 VANGUARD INDEX FDS Cmn 922908595 0 -4,690 -100.00 0 -100.00
2018-05-14 2018-03-31 13F/A-1 VANGUARD INDEX FDS Cmn 922908595 4,690 2,416 106.24 769 110.11 0.0004
2018-05-11 2018-03-31 13F VANGUARD INDEX FDS Cmn 922908595 4,690 2,416 769
2018-02-09 2017-12-31 13F VANGUARD INDEX FDS Cmn 922908595 2,274 -14,586 -86.51 366 -85.78 0.0002
2017-11-09 2017-09-30 13F VANGUARD INDEX FDS Cmn 922908595 16,860 16,860 2,574 0.0020
2016-11-10 2016-09-30 13F VANGUARD SMALL-CAP GRWTH ETF Cmn 922908595 0 -31,721 -100.00 0 -100.00
2017-01-31 2016-06-30 13F/A-1 VANGUARD INDEX FDS Cmn 922908595 31,721 31,721 0.00 3,930 0.0044
2016-08-12 2016-06-30 13F VANGUARD SMALL-CAP GRWTH ETF Cmn 922908595 31,721 3,930
2017-01-31 2015-12-31 13F/A-1 VANGUARD SMALL-CAP GRWTH ETF Cmn 922908595 0 -25,468 -100.00 0 -100.00
2015-11-16 2015-09-30 13F VANGUARD SMALL-CAP GRWTH ETF Cmn 922908595 25,468 25,468 0.00 3,000 0.0029
2014-08-14 2014-06-30 13F VANGUARD SMALL-CAP GRWTH ETF Cmn 922908595 0 -1,931 -100.00 0 -100.00
2015-06-26 2014-03-31 13F/A-3 VANGUARD SMALL-CAP GRWTH ETF Cmn 922908595 1,931 1,931 240 0.0019
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
(%)
2026-05-15 2026-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF Call 7,000 -38.05 2,116 -38.03 n/a n/a n/a
2026-02-17 2025-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF Call 11,300 -9.60 3,414 -8.25 n/a n/a n/a
2025-11-14 2025-09-30 13F VANGUARD INDEX FDS SML CP GRW ETF Call 12,500 31.58 3,720 41.44 n/a n/a n/a
2025-08-14 2025-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF Call 9,500 115.91 2,631 137.58 n/a n/a n/a
2025-05-15 2025-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF Call 4,400 -22.81 1,108 -30.64 n/a n/a n/a
2025-02-14 2024-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF Call 5,700 -50.86 1,596 -48.53 n/a n/a n/a
2024-11-14 2024-09-30 13F VANGUARD INDEX FDS SML CP GRW ETF Call 11,600 625.00 3,101 675.25 n/a n/a n/a
2024-08-14 2024-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF Call 1,600 -67.35 400 -68.68 n/a n/a n/a
2024-05-15 2024-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF Call 4,900 -44.32 1,278 -39.96 n/a n/a n/a
2024-02-14 2023-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF Call 8,800 33.33 2,128 50.53 n/a n/a n/a
2023-11-14 2023-09-30 13F VANGUARD INDEX FDS SML CP GRW ETF Call 6,600 6.45 1,414 -0.77 n/a n/a n/a
2023-08-14 2023-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF Call 6,200 -32.61 1,424 -28.44 n/a n/a n/a
2023-05-15 2023-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF Call 9,200 -92.50 1,991 -91.91 n/a n/a n/a
2023-02-14 2022-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF Call 122,700 336.65 24,606 348.77 n/a n/a n/a
2022-11-14 2022-09-30 13F VANGUARD INDEX FDS SML CP GRW ETF Call 28,100 21.12 5,483 19.95 n/a n/a n/a
2022-08-15 2022-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF Call 23,200 -4.53 4,571 -24.20 n/a n/a n/a
2022-05-16 2022-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF Call 24,300 100.83 6,030 76.83 n/a n/a n/a
2022-02-14 2021-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF Call 12,100 70.42 3,410 71.44 n/a n/a n/a
2021-11-15 2021-09-30 13F VANGUARD INDEX FDS Cmn Call 7,100 -28.28 1,989 -30.67 n/a n/a n/a
2021-08-16 2021-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF Call 9,900 -1.00 2,869 4.44 n/a n/a n/a
2021-05-21 2021-03-31 13F/A VANGUARD INDEX FDS SML CP GRW ETF Call 10,000 2,747 n/a n/a n/a
2021-05-17 2021-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF Call 10,000 2,747 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
(%)
2026-05-15 2026-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF Put 2,500 56.25 756 56.31 n/a n/a n/a
2026-02-17 2025-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF Put 1,600 -38.46 483 -37.52 n/a n/a n/a
2025-11-14 2025-09-30 13F VANGUARD INDEX FDS SML CP GRW ETF Put 2,600 100.00 774 114.72 n/a n/a n/a
2025-08-14 2025-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF Put 1,300 -83.33 360 -81.66 n/a n/a n/a
2025-05-15 2025-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF Put 7,800 6.85 1,964 -3.96 n/a n/a n/a
2025-02-14 2024-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF Put 7,300 -2.67 2,044 1.95 n/a n/a n/a
2024-11-14 2024-09-30 13F VANGUARD INDEX FDS SML CP GRW ETF Put 7,500 1,400.00 2,005 1,504.00 n/a n/a n/a
2024-08-14 2024-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF Put 500 -88.10 125 -88.58 n/a n/a n/a
2024-05-15 2024-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF Put 4,200 -75.00 1,095 -73.04 n/a n/a n/a
2024-02-14 2023-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF Put 16,800 1,580.00 4,062 1,797.66 n/a n/a n/a
2023-11-14 2023-09-30 13F VANGUARD INDEX FDS SML CP GRW ETF Put 1,000 -41.18 214 -45.13 n/a n/a n/a
2023-08-14 2023-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF Put 1,700 -76.71 391 -75.30 n/a n/a n/a
2023-05-15 2023-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF Put 7,300 -81.04 1,580 -79.55 n/a n/a n/a
2023-02-14 2022-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF Put 38,500 387.34 7,721 400.65 n/a n/a n/a
2022-11-14 2022-09-30 13F VANGUARD INDEX FDS SML CP GRW ETF Put 7,900 -43.17 1,542 -43.70 n/a n/a n/a
2022-08-15 2022-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF Put 13,900 33.65 2,739 6.12 n/a n/a n/a
2022-05-16 2022-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF Put 10,400 0.00 2,581 -11.94 n/a n/a n/a
2022-02-14 2021-12-31 13F VANGUARD INDEX FDS SML CP GRW ETF Put 10,400 -27.78 2,931 -27.34 n/a n/a n/a
2021-11-15 2021-09-30 13F VANGUARD INDEX FDS Cmn Put 14,400 364.52 4,034 349.22 n/a n/a n/a
2021-08-16 2021-06-30 13F VANGUARD INDEX FDS SML CP GRW ETF Put 3,100 -39.22 898 -35.90 n/a n/a n/a
2021-05-21 2021-03-31 13F/A VANGUARD INDEX FDS SML CP GRW ETF Put 5,100 1,401 n/a n/a n/a
2021-05-17 2021-03-31 13F VANGUARD INDEX FDS SML CP GRW ETF Put 5,100 1,401 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.