QuinStreet, Inc.
DE ˙ DB ˙ US74874Q1004
10,60 € ↑0,10 (0,95%)
2026-05-29
DEL PRIS
SecurityDE:5Q8 / QuinStreet, Inc.
InstitutionSimplex Trading, Llc
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Simplex Trading, Llc ownership in 5Q8 / QuinStreet, Inc.

On May 14, 2026 - Simplex Trading, Llc filed a 13F-HR form disclosing ownership of 0 shares of QuinStreet, Inc. (DE:5Q8) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 2,240 shares of QuinStreet, Inc.. The current value of the position is $0 USD.

Simplex Trading, Llc has a history of taking positions in derivatives of the underlying security (5Q8) in the form of stock options. The firm currently holds call options representing 20,100 of underlying shares valued at $241,400 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.

DE:5Q8 / QuinStreet, Inc. 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 QUINSTREET COM 74874Q100 0 -100.00 0
2026-02-11 2025-12-31 13F QUINSTREET COM 74874Q100 2,240 -1,128 -33.49 32 0.0000
2025-11-12 2025-09-30 13F QUINSTREET COM 74874Q100 3,368 -5,894 -63.64 0 0.0000
2025-08-05 2025-06-30 13F QUINSTREET COM 74874Q100 9,262 813 9.62 0 0.0001
2025-05-12 2025-03-31 13F QUINSTREET COM 74874Q100 8,449 8,449 0 0.0001
2024-11-08 2024-09-30 13F QUINSTREET COM 74874Q100 0 -2,065 -100.00 0 0.0000
2024-07-25 2024-06-30 13F QUINSTREET COM 74874Q100 2,065 2,065 0 0.0000
2024-04-25 2024-03-31 13F QUINSTREET COM 74874Q100 0 -3,191 -100.00 0 0.0000
2024-02-02 2023-12-31 13F QUINSTREET COM 74874Q100 3,191 2,216 227.28 0 0.0000
2023-11-01 2023-09-30 13F QUINSTREET COM 74874Q100 975 -1,678 -63.25 0 0.0000
2023-08-04 2023-06-30 13F QUINSTREET COM 74874Q100 2,653 2,653 0 0.0000
2023-02-02 2022-12-31 13F QUINSTREET COM 74874Q100 0 -2,780 -100.00 0 -100.00
2022-11-04 2022-09-30 13F QUINSTREET COM 74874Q100 2,780 -13,797 -83.23 29 -82.53 0.0000
2022-08-03 2022-06-30 13F QUINSTREET COM 74874Q100 16,577 -2,847 -14.66 166 -26.22 0.0002
2022-05-02 2022-03-31 13F QUINSTREET COM 74874Q100 19,424 13,491 227.39 225 110.28 0.0002
2022-02-23 2021-12-31 13F/A-1 QUINSTREET COM 74874Q100 5,933 312 5.55 107 2.88 0.0001
2022-02-04 2021-12-31 13F QUINSTREET COM 74874Q100 5,621 0 104 0.0000
2021-10-28 2021-09-30 13F QUINSTREET COM 74874Q100 5,621 0 0.00 104 0.00 0.0001
2021-08-12 2021-06-30 13F QUINSTREET COM 74874Q100 5,621 4,401 360.74 104 333.33 0.0001
2021-04-26 2021-03-31 13F QUINSTREET COM 74874Q100 1,220 1,220 -78.30 24 -76.92 0.0000
2021-02-02 2020-12-31 13F QUINSTREET COM 74874Q100 0 -2,601 -100.00 0 -100.00
2020-10-14 2020-09-30 13F QUINSTREET COM 74874Q100 2,601 2,601 41 0.0001
2020-07-13 2020-06-30 13F QUINSTREET COM 74874Q100 0 -3,344 -100.00 0 -100.00
2020-04-29 2020-03-31 13F QUINSTREET COM 74874Q100 3,344 -28,272 -89.42 26 -94.63 0.0000
2020-02-05 2019-12-31 13F QUINSTREET COM 74874Q100 31,616 10,621 50.59 484 83.33 0.0011
2019-10-15 2019-09-30 13F QUINSTREET COM 74874Q100 20,995 20,995 264 0.0008
2019-07-26 2019-06-30 13F QUINSTREET COM 74874Q100 0 -3,269 -100.00 0 -100.00
2019-04-18 2019-03-31 13F QUINSTREET COM 74874Q100 3,269 3,269 43 0.0001
2018-04-26 2018-03-31 13F QUINSTREET COM 74874Q100 0 -1,635 -100.00 0 -100.00
2018-01-10 2017-12-31 13F QUINSTREET COM 74874Q100 1,635 -2,321 -58.67 13 -55.17 0.0006
2017-10-25 2017-09-30 13F QUINSTREET COM 74874Q100 3,956 3,956 29 0.0012
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 QUINSTREET CALL Call 20,100 6,600.00 241 5,925.00 n/a n/a n/a
2026-02-11 2025-12-31 13F QUINSTREET CALL Call 300 50.00 4 n/a n/a n/a
2025-11-12 2025-09-30 13F QUINSTREET CALL Call 200 0 n/a n/a n/a
2025-08-05 2025-06-30 13F QUINSTREET CALL Call 0 -100.00 0 n/a n/a n/a
2025-05-12 2025-03-31 13F QUINSTREET CALL Call 3,100 -94.25 0 -100.00 n/a n/a n/a
2025-02-11 2024-12-31 13F QUINSTREET CALL Call 53,900 -24.19 1 0.00 n/a n/a n/a
2024-11-08 2024-09-30 13F QUINSTREET CALL Call 71,100 2,121.88 1 n/a n/a n/a
2024-07-25 2024-06-30 13F QUINSTREET CALL Call 3,200 -96.34 0 -100.00 n/a n/a n/a
2024-04-25 2024-03-31 13F QUINSTREET CALL Call 87,400 2 n/a n/a n/a
2024-02-02 2023-12-31 13F QUINSTREET CALL Call 0 -100.00 0 n/a n/a n/a
2023-11-01 2023-09-30 13F QUINSTREET CALL Call 300 -57.14 0 n/a n/a n/a
2023-08-04 2023-06-30 13F QUINSTREET CALL Call 700 -93.14 0 n/a n/a n/a
2023-04-27 2023-03-31 13F QUINSTREET CALL Call 10,200 684.62 0 n/a n/a n/a
2023-02-02 2022-12-31 13F QUINSTREET CALL Call 1,300 -97.42 0 -100.00 n/a n/a n/a
2022-11-04 2022-09-30 13F QUINSTREET CALL Call 50,400 16,700.00 529 17,533.33 n/a n/a n/a
2022-08-03 2022-06-30 13F QUINSTREET CALL Call 300 -25.00 3 -25.00 n/a n/a n/a
2022-05-02 2022-03-31 13F QUINSTREET CALL Call 400 -88.89 4 -93.85 n/a n/a n/a
2022-02-23 2021-12-31 13F/A QUINSTREET CALL Call 3,600 65 n/a n/a n/a
2021-08-12 2021-06-30 13F QUINSTREET CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-04-26 2021-03-31 13F QUINSTREET CALL Call 77 -50.96 156 -53.57 n/a n/a n/a
2021-02-02 2020-12-31 13F QUINSTREET CALL Call 157 481.48 336 700.00 n/a n/a n/a
2020-10-14 2020-09-30 13F QUINSTREET CALL Call 27 -32.50 42 2.44 n/a n/a n/a
2020-07-13 2020-06-30 13F QUINSTREET CALL Call 40 700.00 41 925.00 n/a n/a n/a
2020-04-29 2020-03-31 13F QUINSTREET CALL Call 5 -86.11 4 -92.73 n/a n/a n/a
2020-02-05 2019-12-31 13F QUINSTREET CALL Call 36 -90.95 55 -89.02 n/a n/a n/a
2019-10-15 2019-09-30 13F QUINSTREET CALL Call 398 -63.18 501 -70.75 n/a n/a n/a
2019-07-26 2019-06-30 13F QUINSTREET CALL Call 1,081 1,466.67 1,713 1,761.96 n/a n/a n/a
2019-04-18 2019-03-31 13F QUINSTREET CALL Call 69 -81.60 92 -84.87 n/a n/a n/a
2019-01-16 2018-12-31 13F QUINSTREET CALL Call 375 468.18 608 583.15 n/a n/a n/a
2018-10-23 2018-09-30 13F QUINSTREET CALL Call 66 78.38 89 93.48 n/a n/a n/a
2018-07-30 2018-06-30 13F QUINSTREET CALL Call 37 -93.77 46 -8.00 n/a n/a n/a
2018-04-26 2018-03-31 13F QUINSTREET CALL Call 594 7,325.00 50 8.70 n/a n/a n/a
2018-01-10 2017-12-31 13F QUINSTREET CALL Call 8 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 QUINSTREET PUT Put 0 -100.00 0 n/a n/a n/a
2026-02-11 2025-12-31 13F QUINSTREET PUT Put 2,900 -80.00 42 n/a n/a n/a
2025-11-12 2025-09-30 13F QUINSTREET PUT Put 14,500 -33.79 0 n/a n/a n/a
2025-08-05 2025-06-30 13F QUINSTREET PUT Put 21,900 167.07 0 n/a n/a n/a
2025-05-12 2025-03-31 13F QUINSTREET PUT Put 8,200 8,100.00 0 n/a n/a n/a
2025-02-11 2024-12-31 13F QUINSTREET PUT Put 100 0.00 0 n/a n/a n/a
2024-11-08 2024-09-30 13F QUINSTREET PUT Put 100 -98.00 0 n/a n/a n/a
2024-07-25 2024-06-30 13F QUINSTREET PUT Put 5,000 -79.25 0 n/a n/a n/a
2024-04-25 2024-03-31 13F QUINSTREET PUT Put 24,100 1,168.42 0 n/a n/a n/a
2024-02-02 2023-12-31 13F QUINSTREET PUT Put 1,900 375.00 0 n/a n/a n/a
2023-11-01 2023-09-30 13F QUINSTREET PUT Put 400 -63.64 0 n/a n/a n/a
2023-08-04 2023-06-30 13F QUINSTREET PUT Put 1,100 0 n/a n/a n/a
2023-04-27 2023-03-31 13F QUINSTREET PUT Put 0 -100.00 0 n/a n/a n/a
2023-02-02 2022-12-31 13F QUINSTREET PUT Put 1,300 -80.00 0 -100.00 n/a n/a n/a
2022-11-04 2022-09-30 13F QUINSTREET PUT Put 6,500 62.50 68 70.00 n/a n/a n/a
2022-08-03 2022-06-30 13F QUINSTREET PUT Put 4,000 -85.24 40 -87.26 n/a n/a n/a
2022-05-02 2022-03-31 13F QUINSTREET PUT Put 27,100 -3.56 314 -38.55 n/a n/a n/a
2022-02-23 2021-12-31 13F/A QUINSTREET PUT Put 28,100 67.26 511 63.78 n/a n/a n/a
2022-02-04 2021-12-31 13F QUINSTREET PUT Put 16,800 312 n/a n/a n/a
2021-10-28 2021-09-30 13F QUINSTREET PUT Put 16,800 0.00 312 0.00 n/a n/a n/a
2021-08-12 2021-06-30 13F QUINSTREET PUT Put 16,800 45,305.41 312 316.00 n/a n/a n/a
2021-04-26 2021-03-31 13F QUINSTREET PUT Put 37 -84.19 75 -85.03 n/a n/a n/a
2021-02-02 2020-12-31 13F QUINSTREET PUT Put 234 -30.97 501 -6.53 n/a n/a n/a
2020-10-14 2020-09-30 13F QUINSTREET PUT Put 339 2,725.00 536 4,366.67 n/a n/a n/a
2020-07-13 2020-06-30 13F QUINSTREET PUT Put 12 -62.50 12 -52.00 n/a n/a n/a
2020-04-29 2020-03-31 13F QUINSTREET PUT Put 32 -93.57 25 -96.72 n/a n/a n/a
2020-02-05 2019-12-31 13F QUINSTREET PUT Put 498 -2.54 762 18.51 n/a n/a n/a
2019-10-15 2019-09-30 13F QUINSTREET PUT Put 511 356.25 643 263.28 n/a n/a n/a
2019-07-26 2019-06-30 13F QUINSTREET PUT Put 112 433.33 177 532.14 n/a n/a n/a
2019-04-18 2019-03-31 13F QUINSTREET PUT Put 21 -81.25 28 -84.18 n/a n/a n/a
2019-01-16 2018-12-31 13F QUINSTREET PUT Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-10-23 2018-09-30 13F QUINSTREET PUT Put 211 62.31 286 73.33 n/a n/a n/a
2018-07-30 2018-06-30 13F QUINSTREET PUT Put 130 12,900.00 165 -42.31 n/a n/a n/a
2018-04-26 2018-03-31 13F QUINSTREET PUT Put 1 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.