Tenable Holdings, Inc.
US ˙ NasdaqGS ˙ US88025T1025

SecurityTENB / Tenable Holdings, Inc.
InstitutionTrexquant Investment LP
Latest Disclosed Ownership709,928 shares
Latest Disclosed Value $ 12,008,432
Trexquant Investment LP reports 143.67% increase in ownership of TENB / Tenable Holdings, Inc.

On May 15, 2026 - Trexquant Investment LP filed a 13F-HR form disclosing ownership of 709,928 shares of Tenable Holdings, Inc. (US:TENB) valued at $12,008,432 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 291,350 shares of Tenable Holdings, Inc.. This represents a change in shares of 143.67% during the quarter. The current value of the position is $19,771,495 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)
2026-05-15 2026-03-31 13F TENABLE HLDGS COM 88025T102 709,928 418,578 143.67 12,008 75.17 0.0863
2026-02-17 2025-12-31 13F TENABLE HLDGS COM 88025T102 291,350 103,767 55.32 6,855 25.34 0.0611
2025-11-14 2025-09-30 13F TENABLE HLDGS COM 88025T102 187,583 138,089 279.00 5,470 227.29 0.0563
2025-08-12 2025-06-30 13F TENABLE HLDGS COM 88025T102 49,494 -262,810 -84.15 1,672 -84.70 0.0189
2025-05-14 2025-03-31 13F TENABLE HLDGS COM 88025T102 312,304 28,669 10.11 10,924 -2.19 0.1271
2025-02-12 2024-12-31 13F TENABLE HLDGS COM 88025T102 283,635 283,635 11,170 0.1302
2024-11-12 2024-09-30 13F TENABLE HLDGS COM 88025T102 0 -105,352 -100.00 0 -100.00
2024-08-13 2024-06-30 13F TENABLE HLDGS COM 88025T102 105,352 23,707 29.04 4,591 13.78 0.0700
2024-05-14 2024-03-31 13F TENABLE HLDGS COM 88025T102 81,645 81,645 4,036 0.0805
2024-02-09 2023-12-31 13F TENABLE HLDGS COM 88025T102 0 -56,600 -100.00 0 -100.00
2023-11-13 2023-09-30 13F TENABLE HLDGS COM 88025T102 56,600 56,600 2,536 0.0636
2023-08-11 2023-06-30 13F TENABLE HLDGS COM 88025T102 0 -94,524 -100.00 0 -100.00
2023-05-15 2023-03-31 13F TENABLE HLDGS COM 88025T102 94,524 69,156 272.61 4,491 364.32 0.1233
2023-02-13 2022-12-31 13F TENABLE HLDGS COM 88025T102 25,368 25,368 968 0.0274
2022-08-11 2022-06-30 13F TENABLE HLDGS COM 88025T102 0 -14,523 -100.00 0 -100.00
2022-05-13 2022-03-31 13F TENABLE HLDGS COM 88025T102 14,523 -34,954 -70.65 839 -69.21 0.0394
2022-02-14 2021-12-31 13F TENABLE HLDGS COM 88025T102 49,477 27,305 123.15 2,725 166.37 0.1683
2021-11-12 2021-09-30 13F TENABLE HLDGS COM 88025T102 22,172 -2,031 -8.39 1,023 2.20 0.0813
2021-08-12 2021-06-30 13F TENABLE HLDGS COM 88025T102 24,203 -1,301 -5.10 1,001 8.45 0.0845
2021-05-13 2021-03-31 13F TENABLE HLDGS COM 88025T102 25,504 -1,715 -6.30 923 -35.09 0.0847
2021-02-11 2020-12-31 13F TENABLE HLDGS COM 88025T102 27,219 -22,755 -45.53 1,422 -24.64 0.1506
2020-11-06 2020-09-30 13F TENABLE HLDGS COM 88025T102 49,974 36,554 272.38 1,887 371.75 0.1214
2020-08-07 2020-06-30 13F TENABLE HLDGS COM 88025T102 13,420 13,420 400 0.0278
2020-05-08 2020-03-31 13F TENABLE HLDGS COM 88025T102 0 -11,151 -100.00 0 -100.00
2020-02-12 2019-12-31 13F TENABLE HLDGS COM 88025T102 11,151 -8,326 -42.75 267 -38.76 0.0158
2020-02-18 2019-09-30 13F/A-1 TENABLE HLDGS COM 88025T102 19,477 -177 -0.90 436 -22.28 0.0377
2019-11-08 2019-09-30 13F TENABLE HLDGS COM 88025T102 19,477 -177 436 37,656.1955
2019-08-09 2019-06-30 13F TENABLE HLDGS COM 88025T102 19,654 -13,543 -40.80 561 -46.62 0.0505
2019-05-13 2019-03-31 13F TENABLE HLDGS COM 88025T102 33,197 33,197 1,051 0.0746
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.