Company · Ownership research

Tenable Holdings, Inc. TENB

CIK 0001660280 · CUSIP 88025T102

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 88025T102 (TENB), not CUSIP 88025T902 (TENB), CUSIP 88025T952 (TENB), and does not merge CUSIPs.

This page lists the top 20 of 298 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$485.27M 13,872,897 shares	0.01%	-74.13K(-0.50%)Reduced	SEC filing ↗ May 9, 2025	▾
02	BlackRock, Inc. CIK 2012383 · View history	$443.84M 12,688,419 shares	0.01%	+764.91K(+6.40%)Added	SEC filing ↗ May 2, 2025	▾
03	FMR LLC CIK 315066 · View history	$413.91M 11,832,734 shares	0.03%	-3.68M(-23.70%)Reduced	SEC filing ↗ May 12, 2025	▾
04	AMERIPRISE FINANCIAL INC CIK 820027 · View history	$207.04M 5,918,686 shares	0.06%	+312.30K(+5.60%)Added	SEC filing ↗ May 14, 2025	▾
05	RGM Capital, LLC CIK 1323953 · View history	$131.97M 3,772,624 shares	5.47%	+72.61K(+2.00%)Added	SEC filing ↗ May 14, 2025	▾
06	MACKENZIE FINANCIAL CORP CIK 919859 · View history	$131.10M 3,747,785 shares	0.19%	-135.18K(-3.50%)Reduced	SEC filing ↗ May 7, 2025	▾
07	STATE STREET CORP CIK 93751 · View history	$105.39M 3,012,957 shares	0.00%	-22.21K(-0.70%)Reduced	SEC filing ↗ May 15, 2025	▾
08	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$100.23M 2,864,635 shares	0.01%	+61.40K(+2.20%)Added	SEC filing ↗ May 13, 2025	▾
09	FIRST TRUST ADVISORS LP CIK 1125816 · View history	$93.10M 2,661,478 shares	0.08%	+328.83K(+14.10%)Added	SEC filing ↗ May 14, 2025	▾
10	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC CIK 1644956 · View history	$85.17M 2,434,850 shares	0.24%	-205.18K(-7.80%)Reduced	SEC filing ↗ May 9, 2025	▾
11	Penserra Capital Management LLC CIK 1593324 · View history	$59.03M 1,687,589 shares	1.05%	+544.38K(+47.60%)Added	SEC filing ↗ Apr 29, 2025	▾
12	Champlain Investment Partners, LLC CIK 1315478 · View history	$56.80M 1,623,892 shares	0.41%	-39.89K(-2.40%)Reduced	SEC filing ↗ May 14, 2025	▾
13	NORGES BANK CIK 1374170 · Amended · View history	$56.27M 1,608,664 shares	0.01%	+213.29K(+15.30%)Added	SEC filing ↗ May 13, 2025	▾
14	ArrowMark Colorado Holdings LLC CIK 1483859 · View history	$53.06M 1,517,000 shares	0.86%	-124.16K(-7.60%)Reduced	SEC filing ↗ May 15, 2025	▾
15	SHAPIRO CAPITAL MANAGEMENT LLC CIK 1177244 · View history	$45.78M 1,308,850 shares	1.89%	+248.79K(+23.50%)Added	SEC filing ↗ May 15, 2025	▾
16	Fisher Asset Management, LLC CIK 850529 · View history	$43.15M 1,233,591 shares	0.02%	-4.80K(-0.40%)Reduced	SEC filing ↗ May 14, 2025	▾
17	MORGAN STANLEY CIK 895421 · View history	$41.90M 1,197,942 shares	0.00%	-419.90K(-26.00%)Reduced	SEC filing ↗ May 15, 2025	▾
18	NORTHERN TRUST CORP CIK 73124 · View history	$40.52M 1,158,373 shares	0.01%	-29.48K(-2.50%)Reduced	SEC filing ↗ May 13, 2025	▾
19	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$40.07M 1,145,520 shares	0.04%	+118.70K(+11.60%)Added	SEC filing ↗ May 15, 2025	▾
20	MANUFACTURERS LIFE INSURANCE COMPANY, THE CIK 928047 · View history	$39.52M 1,129,790 shares	0.04%	+155.56K(+16.00%)Added	SEC filing ↗ May 15, 2025	▾

Showing 20 / 298 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

298

Cancelled or null records excluded

Disclosed shares

107,192,896

Not deduplicated across managers

Disclosed value

$3.75B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Tenable Holdings, Inc. · Q1 2025

Explore all 298 reporting institutions.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.