Qualys, Inc.
MX ˙ BMV ˙ US74758T3032
SecurityMX:QLYS / Qualys, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership36,726 shares
Latest Disclosed Value $ 4,880,928
Sei Investments Co reports 19.39% decrease in ownership of QLYS / Qualys, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 36,726 shares of Qualys, Inc. (MX:QLYS) valued at $4,880,928 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 45,562 shares of Qualys, Inc.. This represents a change in shares of -19.39% during the quarter.

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)
2026-02-13 2025-12-31 13F QUALYS COM 74758T303 36,726 -8,836 -19.39 4,881 -19.06 0.0048
2025-11-13 2025-09-30 13F QUALYS COM 74758T303 45,562 10,607 30.34 6,029 20.72 0.0065
2025-08-14 2025-06-30 13F QUALYS COM 74758T303 34,955 23,524 205.79 4,994 247.05 0.0058
2025-05-14 2025-03-31 13F/A-1 QUALYS COM 74758T303 11,431 -7,951 -41.02 1,440 -47.04 0.0019
2025-05-13 2025-03-31 13F QUALYS COM 74758T303 19,209 -173 2,677 0.0029
2025-02-11 2024-12-31 13F QUALYS COM 74758T303 19,382 -11,310 -36.85 2,718 -31.08 0.0035
2024-11-12 2024-09-30 13F QUALYS COM 74758T303 30,692 -10,541 -25.56 3,943 -32.95 0.0051
2024-08-13 2024-06-30 13F QUALYS COM 74758T303 41,233 10,218 32.95 5,880 13.60 0.0083
2024-05-07 2024-03-31 13F QUALYS COM 74758T303 31,015 -975 -3.05 5,175 -17.58 0.0076
2024-02-14 2023-12-31 13F QUALYS COM 74758T303 31,990 5,279 19.76 6,279 54.09 0.0101
2023-11-14 2023-09-30 13F QUALYS COM 74758T303 26,711 2,334 9.57 4,075 29.41 0.0073
2023-08-11 2023-06-30 13F QUALYS COM 74758T303 24,377 -18,269 -42.84 3,150 -43.20 0.0055
2023-05-12 2023-03-31 13F QUALYS COM 74758T303 42,646 1,174 2.83 5,545 19.12 0.0103
2023-02-10 2022-12-31 13F QUALYS COM 74758T303 41,472 -2,029 -4.66 4,654 -23.26 0.0103
2022-11-14 2022-09-30 13F QUALYS COM 74758T303 43,501 21,682 99.37 6,065 118.56 0.0135
2022-08-15 2022-06-30 13F QUALYS COM 74758T303 21,819 14,272 189.11 2,775 161.05 0.0060
2022-05-13 2022-03-31 13F QUALYS COM 74758T303 7,547 -219 -2.82 1,063 -0.37 0.0021
2022-02-14 2021-12-31 13F QUALYS COM 74758T303 7,766 3,215 70.64 1,067 109.22 0.0020
2021-11-12 2021-09-30 13F QUALYS COM 74758T303 4,551 136 3.08 510 13.33 0.0011
2021-08-06 2021-06-30 13F QUALYS COM 74758T303 4,415 -1,378 -23.79 450 -26.71 0.0010
2021-05-12 2021-03-31 13F QUALYS COM 74758T303 5,793 -415 -6.68 614 -17.69 0.0015
2021-02-08 2020-12-31 13F QUALYS COM 74758T303 6,208 -66,665 -91.48 746 -89.50 0.0019
2020-12-04 2020-09-30 13F/A-1 QUALYS COM 74758T303 72,873 -15,525 -17.56 7,102 -22.63 0.0206
2020-11-06 2020-09-30 13F QUALYS COM 74758T303 72,882 -15,516 7,103 17,102.4447
2020-08-17 2020-06-30 13F/A-1 QUALYS COM 74758T303 88,398 5,056 6.07 9,179 26.62 0.0285
2020-08-11 2020-06-30 13F QUALYS COM 74758T303 78,955 -4,387 6,694 18,157.8313
2020-05-14 2020-03-31 13F QUALYS COM 74758T303 83,342 10,548 14.49 7,249 19.44 0.0266
2020-02-06 2019-12-31 13F QUALYS COM 74758T303 72,794 -1,782 -2.39 6,069 7.68 0.0181
2019-11-12 2019-09-30 13F QUALYS COM 74758T303 74,576 17,422 30.48 5,636 13.24 0.0144
2019-08-14 2019-06-30 13F QUALYS COM 74758T303 57,154 57,154 4,977 0.0163
2018-11-08 2018-09-30 13F QUALYS COM 74758T303 0 -9,272 -100.00 0 -100.00
2018-08-03 2018-06-30 13F QUALYS COM 74758T303 9,272 9,083 4,805.82 781 5,478.57 0.0027
2018-05-11 2018-03-31 13F QUALYS COM 74758T303 189 0 0.00 14 27.27 0.0001
2018-02-08 2017-12-31 13F QUALYS COM 74758T303 189 189 11 0.0000
2016-08-11 2016-06-30 13F QUALYS COM 74758T303 0 -96 -100.00 0 -100.00
2016-05-10 2016-03-31 13F/A-1 QUALYS COM 74758T303 96 -65,897 -99.85 2 -99.91 0.0000
2016-02-03 2015-12-31 13F QUALYS COM 74758T303 65,993 65,993 0.00 2,184 0.0133
2015-10-30 2015-09-30 13F QUALYS COM 74758T303 0 -6,956 -100.00 0 -100.00
2015-08-07 2015-06-30 13F/A-1 QUALYS COM 74758T303 6,956 -5,000 -41.82 281 -49.46 0.0025
2015-08-04 2015-06-30 13F QUALYS COM 74758T303 6,956 -5,000 281 0.0025
2015-05-14 2015-03-31 13F/A-1 QUALYS COM 74758T303 11,956 -6,088 -33.74 556 -18.36 0.0048
2015-05-01 2015-03-31 13F QUALYS COM 74758T303 11,956 556
2015-02-10 2014-12-31 13F QUALYS COM 74758T303 18,044 18,044 681 0.0060
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.