Qualys, Inc.
MX ˙ BMV ˙ US74758T3032
SecurityMX:QLYS / Qualys, Inc.
InstitutionCDAM (UK) Ltd
Latest Disclosed Ownership469,001 shares
Latest Disclosed Value $ 41,201,738
CDAM (UK) Ltd reports 21.30% increase in ownership of QLYS / Qualys, Inc.

On May 14, 2026 - CDAM (UK) Ltd filed a 13F-HR form disclosing ownership of 469,001 shares of Qualys, Inc. (MX:QLYS) valued at $41,201,738 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 386,650 shares of Qualys, Inc.. This represents a change in shares of 21.30% 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 469,001 82,351 21.30 41,202 -19.82 9.1371
2026-02-13 2025-12-31 13F QLYS US Equity COM 74758T303 386,650 32,940 9.31 51,386 9.78 9.3445
2025-11-13 2025-09-30 13F QLYS US Equity COM 74758T303 353,710 -46,225 -11.56 46,806 -18.08 8.4434
2025-08-13 2025-06-30 13F QLYS US Equity COM 74758T303 399,935 -211,598 -34.60 57,139 -25.80 9.5024
2025-05-14 2025-03-31 13F QLYS US Equity COM 74758T303 611,533 -260 -0.04 77,010 -10.23 12.4560
2025-02-13 2024-12-31 13F QUALYS COM 74758T303 611,793 108,880 21.65 85,786 32.79 12.8722
2024-11-13 2024-09-30 13F QUALYS COM 74758T303 502,913 38,509 8.29 64,604 -2.45 9.5446
2024-08-13 2024-06-30 13F QUALYS COM 74758T303 464,404 71,144 18.09 66,224 0.92 9.8907
2024-05-14 2024-03-31 13F QUALYS COM 74758T303 393,260 -7,500 -1.87 65,623 -16.57 8.1630
2024-02-13 2023-12-31 13F QUALYS COM 74758T303 400,760 -152,968 -27.63 78,661 -6.88 9.7416
2023-11-13 2023-09-30 13F QUALYS COM 74758T303 553,728 -9,655 -1.71 84,471 16.08 12.7835
2023-08-11 2023-06-30 13F QUALYS COM 74758T303 563,383 -200 -0.04 72,772 -0.69 10.3392
2023-05-11 2023-03-31 13F QUALYS COM 74758T303 563,583 21,250 3.92 73,277 20.39 10.7300
2023-02-13 2022-12-31 13F QUALYS COM 74758T303 542,333 0 0.00 60,866 -19.49 9.6532
2022-11-14 2022-09-30 13F QUALYS COM 74758T303 542,333 -115,699 -17.58 75,596 -8.92 12.3648
2022-08-12 2022-06-30 13F QUALYS COM 74758T303 658,032 -1,100 -0.17 83,004 -11.57 12.4163
2022-05-13 2022-03-31 13F QUALYS COM 74758T303 659,132 20,200 3.16 93,868 7.06 12.2925
2022-02-14 2021-12-31 13F QUALYS COM 74758T303 638,932 -4,800 -0.75 87,674 22.38 10.5074
2021-11-12 2021-09-30 13F QUALYS COM 74758T303 643,732 -11,861 -1.81 71,641 8.53 8.8235
2021-08-13 2021-06-30 13F QUALYS COM 74758T303 655,593 187,119 39.94 66,012 34.48 8.5139
2021-05-13 2021-03-31 13F QUALYS COM 74758T303 468,474 42,014 9.85 49,087 -5.55 6.4944
2021-02-11 2020-12-31 13F QUALYS COM 74758T303 426,460 103,684 32.12 51,973 64.29 7.9307
2020-11-12 2020-09-30 13F QUALYS COM 74758T303 322,776 77,266 31.47 31,635 23.87 5.2936
2020-08-13 2020-06-30 13F QUALYS COM 74758T303 245,510 0 0.00 25,538 19.58 4.6018
2020-05-14 2020-03-31 13F QUALYS COM 74758T303 245,510 245,510 21,357 4.7434
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.