SecurityUS9219101055 / Vanguard U.S. Growth Fund Investor Shares
InstitutionSimplex Trading, Llc
Simplex Trading, Llc ownership in US9219101055 / Vanguard U.S. Growth Fund Investor Shares

Simplex Trading, Llc has a history of taking positions in derivatives of the underlying security () in the form of stock options. The firm currently holds call options representing 1,600 of underlying shares valued at $309,413 USD and put options representing 600 of underlying shares valued at $99,468 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 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.

US9219101055 / Vanguard U.S. Growth Fund Investor Shares Historical Put/Call Ratio
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
(%)
2026-05-14 2026-03-31 13F VANGUARD WORLD FD CALL Call 1,600 -92.52 309 -86.49 n/a n/a n/a
2026-02-11 2025-12-31 13F VANGUARD WORLD FD CALL Call 21,400 148.84 2,289 114,300.00 n/a n/a n/a
2025-11-12 2025-09-30 13F VANGUARD WORLD FD CALL Call 8,600 -30.08 3 0.00 n/a n/a n/a
2025-08-05 2025-06-30 13F VANGUARD WORLD FD CALL Call 12,300 -30.90 3 0.00 n/a n/a n/a
2025-05-12 2025-03-31 13F VANGUARD WORLD FD CALL Call 17,800 -42.39 3 0.00 n/a n/a n/a
2025-02-11 2024-12-31 13F VANGUARD WORLD FD CALL Call 30,900 16.60 3 0.00 n/a n/a n/a
2024-11-08 2024-09-30 13F VANGUARD WORLD FD CALL Call 26,500 -13.11 3 0.00 n/a n/a n/a
2024-07-25 2024-06-30 13F VANGUARD WORLD FD CALL Call 30,500 91.82 3 100.00 n/a n/a n/a
2024-04-25 2024-03-31 13F VANGUARD WORLD FD CALL Call 15,900 30.33 2 0.00 n/a n/a n/a
2024-02-02 2023-12-31 13F VANGUARD WORLD FD CALL Call 12,200 -54.65 1 -50.00 n/a n/a n/a
2023-11-01 2023-09-30 13F VANGUARD WORLD FD CALL Call 26,900 66.05 2 100.00 n/a n/a n/a
2023-08-04 2023-06-30 13F VANGUARD WORLD FD CALL Call 16,200 14.89 2 0.00 n/a n/a n/a
2023-04-27 2023-03-31 13F VANGUARD WORLD FD CALL Call 14,100 62.07 1 n/a n/a n/a
2023-02-02 2022-12-31 13F VANGUARD WORLD FD CALL Call 8,700 -45.28 1 -100.00 n/a n/a n/a
2022-11-04 2022-09-30 13F VANGUARD WORLD FD CALL Call 15,900 -40.23 1,704 -40.13 n/a n/a n/a
2022-08-03 2022-06-30 13F VANGUARD WORLD FD CALL Call 26,600 964.00 2,846 551.26 n/a n/a n/a
2022-05-02 2022-03-31 13F VANGUARD WORLD FD CALL Call 2,500 -90.12 437 -88.93 n/a n/a n/a
2022-02-23 2021-12-31 13F/A VANGUARD WORLD FD CALL Call 25,300 314.75 3,947 357.36 n/a n/a n/a
2022-02-04 2021-12-31 13F VANGUARD WORLD FD CALL Call 6,100 863 n/a n/a n/a
2021-10-28 2021-09-30 13F VANGUARD WORLD FD CALL Call 6,100 0.00 863 -0.12 n/a n/a n/a
2021-08-12 2021-06-30 13F VANGUARD WORLD FD CALL Call 6,100 14,778.05 864 35.64 n/a n/a n/a
2021-04-26 2021-03-31 13F VANGUARD WORLD FD CALL Call 41 7.89 637 -15.41 n/a n/a n/a
2021-02-02 2020-12-31 13F VANGUARD WORLD FD CALL Call 38 153.33 753 190.73 n/a n/a n/a
2020-10-14 2020-09-30 13F VANGUARD WORLD FD CALL Call 15 1,400.00 259 -65.60 n/a n/a n/a
2020-07-13 2020-06-30 13F VANGUARD WORLD FD CALL Call 1 -90.00 0 -100.00 n/a n/a n/a
2020-04-29 2020-03-31 13F VANGUARD WORLD FD CALL Call 10 900.00 66 n/a n/a n/a
2020-02-05 2019-12-31 13F VANGUARD WORLD FD CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-10-15 2019-09-30 13F VANGUARD WORLD FD CALL Call 2 0 n/a n/a n/a
2017-01-11 2016-12-31 13F VANGUARD WORLD FD CALL Call 0 -100.00 0 n/a n/a n/a
2016-10-07 2016-09-30 13F VANGUARD WORLD FD CALL Call 2 100.00 0 n/a n/a n/a
2016-07-18 2016-06-30 13F VANGUARD WORLD FD CALL Call 1 -50.00 0 n/a n/a n/a
2016-04-14 2016-03-31 13F VANGUARD WORLD FD CALL Call 2 0.00 0 n/a n/a n/a
2016-01-20 2015-12-31 13F VANGUARD WORLD FD CALL Call 2 0.00 0 n/a n/a n/a
2015-10-08 2015-09-30 13F VANGUARD WORLD FD CALL Call 2 0.00 0 n/a n/a n/a
2015-07-08 2015-06-30 13F VANGUARD WORLD FD CALL Call 2 0.00 0 n/a n/a n/a
2015-04-21 2015-03-31 13F VANGUARD WORLD FD CALL Call 2 0 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
(%)
2026-05-14 2026-03-31 13F VANGUARD WORLD FD PUT Put 600 -94.23 99 -87.31 n/a n/a n/a
2026-02-11 2025-12-31 13F VANGUARD WORLD FD PUT Put 10,400 205.88 780 n/a n/a n/a
2025-11-12 2025-09-30 13F VANGUARD WORLD FD PUT Put 3,400 -35.85 1 n/a n/a n/a
2025-08-05 2025-06-30 13F VANGUARD WORLD FD PUT Put 5,300 89.29 0 n/a n/a n/a
2025-05-12 2025-03-31 13F VANGUARD WORLD FD PUT Put 2,800 -76.47 0 -100.00 n/a n/a n/a
2025-02-11 2024-12-31 13F VANGUARD WORLD FD PUT Put 11,900 128.85 3 n/a n/a n/a
2024-11-08 2024-09-30 13F VANGUARD WORLD FD PUT Put 5,200 -86.84 1 -100.00 n/a n/a n/a
2024-07-25 2024-06-30 13F VANGUARD WORLD FD PUT Put 39,500 -46.40 9 -35.71 n/a n/a n/a
2024-04-25 2024-03-31 13F VANGUARD WORLD FD PUT Put 73,700 -28.86 15 -30.00 n/a n/a n/a
2024-02-02 2023-12-31 13F VANGUARD WORLD FD PUT Put 103,600 289.47 20 900.00 n/a n/a n/a
2023-11-01 2023-09-30 13F VANGUARD WORLD FD PUT Put 26,600 82.19 3 100.00 n/a n/a n/a
2023-08-04 2023-06-30 13F VANGUARD WORLD FD PUT Put 14,600 121.21 1 n/a n/a n/a
2023-04-27 2023-03-31 13F VANGUARD WORLD FD PUT Put 6,600 29.41 1 n/a n/a n/a
2023-02-02 2022-12-31 13F VANGUARD WORLD FD PUT Put 5,100 18.60 0 -100.00 n/a n/a n/a
2022-11-04 2022-09-30 13F VANGUARD WORLD FD PUT Put 4,300 437.50 445 297.32 n/a n/a n/a
2022-08-03 2022-06-30 13F VANGUARD WORLD FD PUT Put 800 -83.67 112 -83.11 n/a n/a n/a
2022-05-02 2022-03-31 13F VANGUARD WORLD FD PUT Put 4,900 -31.94 663 -55.89 n/a n/a n/a
2022-02-23 2021-12-31 13F/A VANGUARD WORLD FD PUT Put 7,200 157.14 1,503 283.42 n/a n/a n/a
2022-02-04 2021-12-31 13F VANGUARD WORLD FD PUT Put 2,800 392 n/a n/a n/a
2021-10-28 2021-09-30 13F VANGUARD WORLD FD PUT Put 2,800 0.00 392 0.00 n/a n/a n/a
2021-08-12 2021-06-30 13F VANGUARD WORLD FD PUT Put 2,800 1,900.00 392 -85.67 n/a n/a n/a
2021-04-26 2021-03-31 13F VANGUARD WORLD FD PUT Put 140 164.15 2,735 153.48 n/a n/a n/a
2021-02-02 2020-12-31 13F VANGUARD WORLD FD PUT Put 53 3.92 1,079 14.18 n/a n/a n/a
2020-10-14 2020-09-30 13F VANGUARD WORLD FD PUT Put 51 5,000.00 945 5,806.25 n/a n/a n/a
2020-07-13 2020-06-30 13F VANGUARD WORLD FD PUT Put 1 0.00 16 33.33 n/a n/a n/a
2020-04-29 2020-03-31 13F VANGUARD WORLD FD PUT Put 1 0.00 12 -25.00 n/a n/a n/a
2019-01-16 2018-12-31 13F VANGUARD WORLD FD PUT Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-10-23 2018-09-30 13F VANGUARD WORLD FD PUT Put 1 0 n/a n/a n/a
2016-01-20 2015-12-31 13F VANGUARD WORLD FD PUT Put 0 -100.00 0 n/a n/a n/a
2015-10-08 2015-09-30 13F VANGUARD WORLD FD PUT Put 2 0 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.