誇利斯公司
MX ˙ BMV ˙ US74758T3032
SecurityMX:QLYS / Qualys, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership510,546 shares
Latest Disclosed Value $ 44,851,467
Northern Trust Corp reports 0.41% decrease in ownership of QLYS / Qualys, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 510,546 shares of Qualys, Inc. (MX:QLYS) valued at $44,851,467 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 512,649 shares of Qualys, Inc.. This represents a change in shares of -0.41% 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)
2026-05-14 2026-03-31 13F QUALYS COM 74758T303 510,546 -2,103 -0.41 44,851 -34.17 0.0012
2026-02-17 2025-12-31 13F QUALYS COM 74758T303 512,649 -33,006 -6.05 68,131 -5.64 0.0018
2025-11-14 2025-09-30 13F QUALYS COM 74758T303 545,655 4,378 0.81 72,207 -6.63 0.0021
2025-08-13 2025-06-30 13F QUALYS COM 74758T303 541,277 -16,958 -3.04 77,332 10.01 0.0106
2025-05-13 2025-03-31 13F QUALYS COM 74758T303 558,235 -12,781 -2.24 70,299 -12.20 0.0104
2025-02-14 2024-12-31 13F QUALYS COM 74758T303 571,016 52,256 10.07 80,068 20.15 0.0113
2024-11-13 2024-09-30 13F QUALYS COM 74758T303 518,760 -7,991 -1.52 66,640 -11.28 0.0109
2024-08-14 2024-06-30 13F QUALYS COM 74758T303 526,751 14,393 2.81 75,115 -12.14 0.0127
2024-05-14 2024-03-31 13F QUALYS COM 74758T303 512,358 -47,759 -8.53 85,497 -22.23 0.0148
2024-02-13 2023-12-31 13F QUALYS COM 74758T303 560,117 -10,840 -1.90 109,940 26.22 0.0199
2023-11-13 2023-09-30 13F QUALYS COM 74758T303 570,957 14,273 2.56 87,099 21.13 0.0169
2023-08-11 2023-06-30 13F QUALYS COM 74758T303 556,684 -22,032 -3.81 71,907 -4.44 0.0138
2023-05-15 2023-03-31 13F QUALYS COM 74758T303 578,716 21,107 3.79 75,245 20.24 0.0149
2023-02-13 2022-12-31 13F QUALYS COM 74758T303 557,609 3,422 0.62 62,580 -18.99 0.0131
2022-11-14 2022-09-30 13F QUALYS COM 74758T303 554,187 -19,791 -3.45 77,248 6.69 0.0176
2022-08-12 2022-06-30 13F QUALYS COM 74758T303 573,978 15,112 2.70 72,402 -9.03 0.0155
2022-05-13 2022-03-31 13F QUALYS COM 74758T303 558,866 -25,937 -4.44 79,588 -0.82 0.0140
2022-02-08 2021-12-31 13F QUALYS COM 74758T303 584,803 3,226 0.55 80,246 23.98 0.0131
2021-11-15 2021-09-30 13F QUALYS COM 74758T303 581,577 -30,427 -4.97 64,724 5.03 0.0115
2021-08-13 2021-06-30 13F QUALYS COM 74758T303 612,004 -18,522 -2.94 61,622 -6.73 0.0109
2021-05-12 2021-03-31 13F QUALYS COM 74758T303 630,526 -6,294 -0.99 66,066 -14.87 0.0123
2021-02-11 2020-12-31 13F QUALYS COM 74758T303 636,820 -5,419 -0.84 77,610 23.30 0.0151
2020-11-16 2020-09-30 13F QUALYS COM 74758T303 642,239 -34,512 -5.10 62,945 -10.58 0.0138
2020-08-14 2020-06-30 13F QUALYS COM 74758T303 676,751 122,468 22.09 70,396 46.00 0.0167
2020-05-14 2020-03-31 13F QUALYS COM 74758T303 554,283 25,065 4.74 48,217 9.28 0.0138
2020-02-14 2019-12-31 13F QUALYS COM 74758T303 529,218 23,163 4.58 44,121 15.37 0.0099
2019-11-13 2019-09-30 13F QUALYS COM 74758T303 506,055 9,290 1.87 38,242 -11.60 0.0092
2019-08-13 2019-06-30 13F QUALYS COM 74758T303 496,765 1,280 0.26 43,258 5.52 0.0103
2019-05-13 2019-03-31 13F QUALYS COM 74758T303 495,485 23,773 5.04 40,997 16.28 0.0101
2019-02-12 2018-12-31 13F QUALYS COM 74758T303 471,712 3,309 0.71 35,256 -15.52 0.0099
2018-11-14 2018-09-30 13F QUALYS COM 74758T303 468,403 16,602 3.67 41,734 9.58 0.0102
2018-09-18 2018-06-30 13F/A-1 QUALYS COM 74758T303 451,801 22,051 5.13 38,086 21.82 0.0097
2018-08-14 2018-06-30 13F QUALYS COM 74758T303 454,193 24,443 38,288
2018-05-09 2018-03-31 13F QUALYS COM 74758T303 429,750 -13,749 -3.10 31,265 18.78 0.0081
2018-02-14 2017-12-31 13F QUALYS COM 74758T303 443,499 11,818 2.74 26,322 17.71 0.0067
2017-11-13 2017-09-30 13F QUALYS COM 74758T303 431,681 -34,863 -7.47 22,361 17.48 0.0058
2017-08-11 2017-06-30 13F QUALYS COM 74758T303 466,544 33,875 7.83 19,034 16.08 0.0053
2017-05-12 2017-03-31 13F QUALYS COM 74758T303 432,669 -12,241 -2.75 16,398 16.45 0.0047
2017-02-13 2016-12-31 13F QUALYS COM 74758T303 444,910 -18,163 -3.92 14,082 -20.38 0.0043
2016-11-09 2016-09-30 13F QUALYS COM 74758T303 463,073 35,646 8.34 17,686 38.80 0.0055
2016-08-12 2016-06-30 13F QUALYS COM 74758T303 427,427 29,022 7.28 12,742 25.46 0.0041
2016-08-19 2016-03-31 13F/A-1 QUALYS COM 74758T303 398,405 17,385 4.56 10,156 -19.45 0.0034
2016-05-13 2016-03-31 13F Qualys COMM 74758T303 398,404 10,084
2016-02-12 2015-12-31 13F Qualys COMM 74758T303 381,020 42,529 12.56 12,609 30.89 0.0042
2015-11-12 2015-09-30 13F Qualys COMM 74758T303 338,491 338,491 0.00 9,633 0.0032
2015-08-13 2015-06-30 13F Qualys COMM 74758T303 0 -285,091 -100.00 0 -100.00
2015-05-14 2015-03-31 13F Qualys COMM 74758T303 285,091 -6,584 -2.26 13,251 20.35 0.0040
2015-02-12 2014-12-31 13F Qualys COM 74758T303 291,675 -54,971 -15.86 11,010 19.40 0.0033
2014-11-13 2014-09-30 13F Qualys COMM 74758T303 346,646 78,430 29.24 9,221 33.93 0.0029
2014-08-14 2014-06-30 13F QUALYS com 74758T303 268,216 -39,665 -12.88 6,885 -12.07 0.0021
2014-05-14 2014-03-31 13F QUALYS COMM 74758T303 307,881 29,678 10.67 7,830 21.77 0.0025
2014-02-21 2013-12-31 13F/A-1 QUALYS COM 74758T303 278,203 6,195 2.28 6,430 10.52 0.0021
2014-02-12 2013-12-31 13F QUALYS COM 74758T303 278,203 6,430
2013-11-13 2013-09-30 13F QUALYS COM 74758T303 272,008 75,519 38.43 5,818 83.71 0.0020
2013-08-09 2013-06-30 13F QUALYS COM 74758T303 196,489 196,489 3,167 0.0011
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.