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 289 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	$436.31M 14,962,471 shares	0.01%	+778.70K(+5.50%)Added	SEC filing ↗ Nov 7, 2025	▾
02	BlackRock, Inc. CIK 2012383 · View history	$383.46M 13,150,291 shares	0.01%	+182.34K(+1.40%)Added	SEC filing ↗ Nov 12, 2025	▾
03	AMERIPRISE FINANCIAL INC CIK 820027 · View history	$209.35M 7,179,473 shares	0.05%	+713.29K(+11.00%)Added	SEC filing ↗ Nov 14, 2025	▾
04	RGM Capital, LLC CIK 1323953 · View history	$130.29M 4,468,156 shares	5.48%	+503.12K(+12.70%)Added	SEC filing ↗ Nov 13, 2025	▾
05	SHAPIRO CAPITAL MANAGEMENT LLC CIK 1177244 · View history	$105.34M 3,612,353 shares	4.56%	+1.01M(+38.80%)Added	SEC filing ↗ Nov 14, 2025	▾
06	FIRST TRUST ADVISORS LP CIK 1125816 · View history	$93.89M 3,219,954 shares	0.07%	+282.26K(+9.60%)Added	SEC filing ↗ Nov 12, 2025	▾
07	STATE STREET CORP CIK 93751 · View history	$89.05M 3,053,692 shares	0.00%	-2.36K(-0.10%)Reduced	SEC filing ↗ Nov 14, 2025	▾
08	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$85.69M 2,938,208 shares	0.01%	+31.35K(+1.10%)Added	SEC filing ↗ Nov 12, 2025	▾
09	Assenagon Asset Management S.A. CIK 1546007 · View history	$74.34M 2,549,322 shares	0.11%	-690.30K(-21.30%)Reduced	SEC filing ↗ Oct 7, 2025	▾
10	MACKENZIE FINANCIAL CORP CIK 919859 · View history	$73.08M 2,506,270 shares	0.09%	-183.77K(-6.80%)Reduced	SEC filing ↗ Nov 13, 2025	▾
11	MORGAN STANLEY CIK 895421 · Amended · View history	$67.50M 2,314,919 shares	0.00%	-1.91M(-45.20%)Reduced	SEC filing ↗ May 27, 2026	▾
12	Penserra Capital Management LLC CIK 1593324 · View history	$63.62M 2,181,678 shares	0.76%	-68.06K(-3.00%)Reduced	SEC filing ↗ Nov 4, 2025	▾
13	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. CIK 1705339 · View history	$49.21M 1,687,088 shares	0.08%	+21.22K(+1.30%)Added	SEC filing ↗ Nov 14, 2025	▾
14	BARCLAYS PLC CIK 312069 · Amended · View history	$48.87M 1,675,871 shares	0.02%	+833.13K(+98.90%)Added	SEC filing ↗ Mar 31, 2026	▾
15	ROYAL BANK OF CANADA CIK 1000275 · View history	$48.01M 1,646,519 shares	0.01%	+1.53M(+1,291.40%)Added	SEC filing ↗ Nov 14, 2025	▾
16	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$46.62M 1,598,831 shares	0.04%	-119.45K(-7.00%)Reduced	SEC filing ↗ Nov 14, 2025	▾
17	MARSHALL WACE, LLP CIK 1318757 · View history	$45.64M 1,565,271 shares	0.05%	+328.10K(+26.50%)Added	SEC filing ↗ Nov 13, 2025	▾
18	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$44.12M 1,512,979 shares	0.04%	+281.15K(+22.80%)Added	SEC filing ↗ Nov 14, 2025	▾
19	FMR LLC CIK 315066 · View history	$44.06M 1,510,888 shares	0.00%	-3.08M(-67.10%)Reduced	SEC filing ↗ Nov 13, 2025	▾
20	MANUFACTURERS LIFE INSURANCE COMPANY, THE CIK 928047 · View history	$42.92M 1,471,786 shares	0.04%	+30.80K(+2.10%)Added	SEC filing ↗ Nov 14, 2025	▾

Showing 20 / 289 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

289

Cancelled or null records excluded

Disclosed shares

110,302,881

Not deduplicated across managers

Disclosed value

$3.22B

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. · Q3 2025

Explore all 289 reporting institutions.

This page includes 20 of 289 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 289 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"88025T102","quarter":"2025Q3","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

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.