Qualys, Inc.
US ˙ NasdaqGS ˙ US74758T3032

SecurityQLYS / Qualys, Inc.
InstitutionQuantbot Technologies LP
Latest Disclosed Ownership17,586 shares
Latest Disclosed Value $ 1,544,930
Quantbot Technologies LP reports 0.39% decrease in ownership of QLYS / Qualys, Inc.

On May 13, 2026 - Quantbot Technologies LP filed a 13F-HR form disclosing ownership of 17,586 shares of Qualys, Inc. (US:QLYS) valued at $1,544,930 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 17,654 shares of Qualys, Inc.. This represents a change in shares of -0.39% during the quarter. The current value of the position is $1,962,773 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)
2026-05-13 2026-03-31 13F QUALYS COM 74758T303 17,586 -68 -0.39 1,545 -34.19 0.0632
2026-02-10 2025-12-31 13F QUALYS COM 74758T303 17,654 -13,616 -43.54 2,346 -43.29 0.0780
2025-11-12 2025-09-30 13F QUALYS COM 74758T303 31,270 -9,453 -23.21 4,138 -28.89 0.1126
2025-08-13 2025-06-30 13F QUALYS COM 74758T303 40,723 5,428 15.38 5,818 30.92 0.1492
2025-05-13 2025-03-31 13F QUALYS COM 74758T303 35,295 -11,431 -24.46 4,445 -32.16 0.1415
2025-02-11 2024-12-31 13F QUALYS COM 74758T303 46,726 15,866 51.41 6,552 65.26 0.2394
2024-11-13 2024-09-30 13F QUALYS COM 74758T303 30,860 -5,243 -14.52 3,964 -23.00 0.1564
2024-08-09 2024-06-30 13F QUALYS COM 74758T303 36,103 26,069 259.81 5,148 207.53 0.2492
2024-05-06 2024-03-31 13F QUALYS COM 74758T303 10,034 5,587 125.64 1,674 91.97 0.0944
2024-02-14 2023-12-31 13F QUALYS COM 74758T303 4,447 -5,028 -53.07 873 -39.65 0.0507
2023-11-07 2023-09-30 13F QUALYS COM 74758T303 9,475 -894 -8.62 1,445 7.92 0.0971
2023-08-08 2023-06-30 13F QUALYS COM 74758T303 10,369 7,741 294.56 1,339 292.67 0.0877
2023-05-12 2023-03-31 13F QUALYS COM 74758T303 2,628 -4,725 -64.26 342 -58.67 0.0242
2023-02-13 2022-12-31 13F QUALYS COM 74758T303 7,353 -679 -8.45 825 -26.27 0.0592
2022-11-07 2022-09-30 13F QUALYS COM 74758T303 8,032 4,180 108.52 1,119 130.72 0.0845
2022-08-09 2022-06-30 13F QUALYS COM 74758T303 3,852 667 20.94 485 7.06 0.0446
2022-05-16 2022-03-31 13F QUALYS COM 74758T303 3,185 3,185 453 0.0395
2022-02-11 2021-12-31 13F QUALYS COM 74758T303 0 -2,379 -100.00 0 -100.00
2021-11-09 2021-09-30 13F QUALYS COM 74758T303 2,379 -6,136 -72.06 264 -69.19 0.0193
2021-08-12 2021-06-30 13F QUALYS COM 74758T303 8,515 8,515 857 0.0674
2021-02-12 2020-12-31 13F QUALYS COM 74758T303 0 -4,792 -100.00 0 -100.00
2020-11-16 2020-09-30 13F QUALYS COM 74758T303 4,792 -4,284 -47.20 469 -50.32 0.0538
2020-08-13 2020-06-30 13F QUALYS COM 74758T303 9,076 9,076 89.40 944 101.28 0.1247
2020-05-13 2020-03-31 13F QUALYS COM 74758T303 0 -1,137 -100.00 0 -100.00
2020-02-10 2019-12-31 13F QUALYS COM 74758T303 1,137 -3,526 -75.62 94 -73.30 0.0093
2019-11-12 2019-09-30 13F QUALYS COM 74758T303 4,663 963 26.03 352 9.32 0.0347
2019-08-13 2019-06-30 13F QUALYS COM 74758T303 3,700 1,500 68.18 322 76.92 0.0322
2019-05-13 2019-03-31 13F QUALYS COM 74758T303 2,200 2,200 -40.54 182 -43.48 0.0173
2019-02-13 2018-12-31 13F QUALYS COM 74758T303 0 -6,853 -100.00 0 -100.00
2018-11-13 2018-09-30 13F QUALYS COM 74758T303 6,853 6,853 610 0.0427
2018-08-13 2018-06-30 13F QUALYS COM 74758T303 0 -9,858 -100.00 0 -100.00
2018-05-11 2018-03-31 13F QUALYS COM 74758T303 9,858 9,858 717 0.0617
2016-04-28 2016-03-31 13F QUALYS COM 74758T303 0 -2,170 -100.00 0 -100.00
2016-01-22 2015-12-31 13F QUALYS COM 74758T303 2,170 2,170 71 0.0122
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.