Qualys, Inc.
US ˙ NasdaqGS ˙ US74758T3032

SecurityQLYS / Qualys, Inc.
InstitutionKBC Group NV
Latest Disclosed Ownership27,958 shares
Latest Disclosed Value $ 2,456
KBC Group NV reports 251.32% increase in ownership of QLYS / Qualys, Inc.

On May 7, 2026 - KBC Group NV filed a 13F-HR form disclosing ownership of 27,958 shares of Qualys, Inc. (US:QLYS) valued at $2,456,110 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 7,958 shares of Qualys, Inc.. This represents a change in shares of 251.32% during the quarter. The current value of the position is $3,120,392 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-07 2026-03-31 13F QUALYS COM 74758T303 27,958 20,000 251.32 2 100.00 0.0032
2026-01-26 2025-12-31 13F QUALYS COM 74758T303 7,958 7,000 730.69 1 0.0024
2026-01-20 2025-09-30 13F QUALYS COM 74758T303 958 0 0.00 0 0.0003
2025-08-08 2025-06-30 13F QUALYS COM 74758T303 958 -763 -44.33 0 0.0004
2025-04-25 2025-03-31 13F QUALYS COM 74758T303 1,721 -3 -0.17 0 0.0007
2025-01-22 2024-12-31 13F QUALYS COM 74758T303 1,724 633 58.02 0 0.0007
2024-11-06 2024-09-30 13F QUALYS COM 74758T303 1,091 194 21.63 0 0.0004
2024-07-17 2024-06-30 13F QUALYS COM 74758T303 897 0 0.00 0 0.0004
2024-05-08 2024-03-31 13F QUALYS COM 74758T303 897 114 14.56 0 0.0005
2024-02-13 2023-12-31 13F QUALYS COM 74758T303 783 0 0.00 0 0.0005
2024-02-15 2023-09-30 13F/A-1 QUALYS COM 74758T303 783 783 0 0.0005
2024-02-14 2022-06-30 13F/A-1 QUALYS COM 74758T303 0 -1,008 -100.00 0 -100.00 0.0000
2022-07-26 2022-06-30 13F QUALYS COM 74758T303 0 -1,008 0
2024-02-14 2022-03-31 13F/A-1 QUALYS COM 74758T303 1,008 0 0.00 0 0.0006
2022-05-06 2022-03-31 13F QUALYS COM 74758T303 1,008 0 144 0.0005
2024-02-14 2021-12-31 13F/A-1 QUALYS COM 74758T303 1,008 0 0.00 0 -100.00 0.0005
2022-02-03 2021-12-31 13F QUALYS COM 74758T303 1,008 0 138 0.0004
2021-11-10 2021-09-30 13F QUALYS COM 74758T303 1,008 0 0.00 112 10.89 0.0004
2022-02-15 2021-06-30 13F/A-1 QUALYS COM 74758T303 1,008 -2,304 -69.57 101 -70.89 0.0004
2021-08-11 2021-06-30 13F QUALYS COM 74758T303 1,008 -2,304 101 0.0004
2022-02-14 2021-03-31 13F/A-1 QUALYS COM 74758T303 3,312 -183 -5.24 347 -91.85 0.0014
2021-04-26 2021-03-31 13F QUALYS COM 74758T303 3,312 -183 347 0.0014
2022-02-14 2020-12-31 13F/A-1 QUALYS COM 74758T303 3,495 0 0.00 4,259 1,141.69 0.0020
2021-02-10 2020-12-31 13F QUALYS COM 74758T303 3,495 0 426 0.0020
2022-02-14 2020-09-30 13F/A-1 QUALYS COM 74758T303 3,495 -2,666 -43.27 343 -46.49 0.0020
2020-10-28 2020-09-30 13F QUALYS COM 74758T303 3,495 -2,666 343 0.0020
2022-02-14 2020-06-30 13F/A-1 QUALYS COM 74758T303 6,161 -1,233 -16.68 641 -0.31 0.0042
2020-08-10 2020-06-30 13F QUALYS COM 74758T303 6,161 -1,233 641 0.0043
2020-05-04 2020-03-31 13F QUALYS COM 74758T303 7,394 -7,731 -51.11 643 -49.01 0.0054
2020-02-11 2019-12-31 13F QUALYS COM 74758T303 15,125 0 0.00 1,261 10.32 0.0080
2019-11-07 2019-09-30 13F QUALYS COM 74758T303 15,125 0 0.00 1,143 -13.21 0.0084
2019-08-08 2019-06-30 13F/A-1 QUALYS COM 74758T303 15,125 0 0.00 1,317 5.28 0.0102
2019-07-30 2019-06-30 13F QUALYS COM 74758T303 15,125 0 1,317
2019-08-07 2019-03-31 13F/A-1 QUALYS COM 74758T303 15,125 15,125 1,251 0.0103
2019-05-10 2019-03-31 13F QUALYS COM 74758T303 15,125 1,251 0.0103
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.