Company · Ownership research

StepStone Group Inc. STEP

CIK 0001796022 · CUSIP 85914M107

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 85914M107 (STEP), not CUSIP 85914M907 (STEP), CUSIP 85914M957 (STEP), and does not merge CUSIPs.

This page lists the top 20 of 263 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	BlackRock, Inc. CIK 2012383 · View history	$564.39M 11,827,188 shares	0.01%	+1.20M(+11.30%)Added	SEC filing ↗ May 13, 2026	▾
02	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$342.32M 7,173,424 shares	0.26%	+2.72M(+61.00%)Added	SEC filing ↗ May 15, 2026	▾
03	Pitcairn Wealth Advisors LLC CIK 2089089 · View history	$259.30M 4,040,795 shares	23.87%	0(0.00%)Unchanged	SEC filing ↗ May 13, 2026	▾
04	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$250.06M 5,240,073 shares	0.05%	-987.68K(-15.90%)Reduced	SEC filing ↗ May 15, 2026	▾
05	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$232.58M 4,873,759 shares	0.03%	-228.91K(-4.50%)Reduced	SEC filing ↗ May 15, 2026	▾
06	VANGUARD PORTFOLIO MANAGEMENT LLC CIK 2100121 · Amended · View history	$214.02M 4,484,935 shares	0.01%	—	SEC filing ↗ May 8, 2026	▾
07	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history	$168.26M 3,525,956 shares	0.00%	—	SEC filing ↗ May 15, 2026	▾
08	Capital World Investors CIK 1422849 · View history	$156.12M 3,271,525 shares	0.02%	+214.73K(+7.00%)Added	SEC filing ↗ May 13, 2026	▾
09	STATE STREET CORP CIK 93751 · View history	$136.95M 2,869,762 shares	0.00%	+114.72K(+4.20%)Added	SEC filing ↗ May 15, 2026	▾
10	CITADEL ADVISORS LLC CIK 1423053 · View history	$93.76M 1,964,827 shares	0.07%	+365.67K(+22.90%)Added	SEC filing ↗ May 15, 2026	▾
11	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$93.14M 1,951,359 shares	0.01%	+174.68K(+9.80%)Added	SEC filing ↗ May 15, 2026	▾
12	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC CIK 1644956 · View history	$91.36M 1,914,477 shares	0.30%	+1.24M(+185.70%)Added	SEC filing ↗ May 8, 2026	▾
13	JPMORGAN CHASE & CO CIK 19617 · Amended · View history	$68.83M 1,479,884 shares	0.00%	+314.38K(+27.00%)Added	SEC filing ↗ May 13, 2026	▾
14	Balyasny Asset Management L.P. CIK 1218710 · View history	$68.04M 1,425,899 shares	0.13%	+808.65K(+131.00%)Added	SEC filing ↗ May 15, 2026	▾
15	ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 1165408 · View history	$63.15M 1,323,243 shares	0.10%	+1.12M(+549.60%)Added	SEC filing ↗ May 15, 2026	▾
16	WESTFIELD CAPITAL MANAGEMENT CO LP CIK 1177719 · View history	$56.21M 1,177,971 shares	0.24%	+391.47K(+49.80%)Added	SEC filing ↗ May 11, 2026	▾
17	FMR LLC CIK 315066 · View history	$47.49M 995,155 shares	0.00%	-35.63K(-3.50%)Reduced	SEC filing ↗ May 15, 2026	▾
18	FRANKLIN RESOURCES INC CIK 38777 · View history	$46.64M 977,423 shares	0.01%	-205.37K(-17.40%)Reduced	SEC filing ↗ May 13, 2026	▾
19	WASATCH ADVISORS LP CIK 814133 · View history	$43.98M 921,720 shares	0.29%	+4.26K(+0.50%)Added	SEC filing ↗ Apr 21, 2026	▾
20	SAMLYN CAPITAL, LLC CIK 1421097 · View history	$42.73M 895,445 shares	0.73%	+895.45KNew	SEC filing ↗ May 15, 2026	▾

Showing 20 / 263 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

263

Cancelled or null records excluded

Disclosed shares

81,951,494

Not deduplicated across managers

Disclosed value

$3.98B

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.

StepStone Group Inc. · Q1 2026

Explore all 263 reporting institutions.

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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.