CERT · Certara, Inc. · Shareholders & Ownership
10 customers — 24% of revenue (the year ended December 31, 2025)
“Our ten largest customers accounted for 24% of revenues for the year ended December 31, 2025.”
Every disclosed holder of CERT in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns CERT
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 132,453,184 | 86.83% |
| Insiders (Forms 3, 4, 5) | 4,084,342 | 2.68% |
| 13D/G-only blocks | 11,368,350 | 7.45% |
| Remaining | 4,632,904 | 3.04% |
| Registered funds (N-PORT, not summed) | 53,011,422 | 34.75% |
Shares outstanding: 152,538,780, the issuer's latest cover-page count restated onto today's split basis.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of CERT
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
18,818,180 | ||
| 1.1 |
BlackRock, Inc.
13G
CIK 2012383 · Holding company · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
18,032,062 | ||
| 1.2 |
iShares Core S&P Small-Cap ETF
Fund
S000004313 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
7,030,811 | ||
| 1.3 |
iShares Russell 2000 ETF
Fund
S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
3,014,141 | ||
| 1.4 |
iShares Russell 2000 Value ETF
Fund
S000004342 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,100,618 | ||
| 1.5 |
iShares S&P Small-Cap 600 Growth ETF
Fund
S000004314 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
537,076 | ||
| 2 |
Deerfield Management Company, L.P.
13G
CIK 1352546 · Unknown · Nov 25, 2025
Rule 13d-1(c), passive investor
|
7,808,605 | ||
| 3 |
DEERFIELD MANAGEMENT COMPANY, L.P.
13F
CIK 1009258 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
7,512,928 | ||
| 4 |
Haveli Investment Management LLC
13F
CIK 2022286 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
7,400,000 | ||
| 5 |
Jefferies Financial Group Inc.
13F
CIK 96223 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
7,091,051 | ||
| 6 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
7,056,106 | ||
| 7 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,022,686 | ||
| 7.1 |
DIMENSIONAL FUND ADVISORS LP
13G
CIK 354204 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
6,022,686 | ||
| 7.2 |
U.S. SMALL CAP VALUE PORTFOLIO
Fund
S000000987 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
1,722,913 | ||
| 7.3 |
U.S. Targeted Value Portfolio
Fund
S000000970 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
1,175,902 | ||
| 7.4 |
Dimensional U.S. Targeted Value ETF
Fund
S000070901 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
1,027,341 | ||
| 7.5 |
Dimensional US Small Cap Value ETF
Fund
S000075151 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
880,090 | ||
| 8 |
WASATCH ADVISORS LP
13F
CIK 814133 · Registered investment adviser · Sep 30, 2026
|
5,523,922 | ||
| 8.1 |
Wasatch Small Cap Value Fund
Fund
S000000878 · Registered fund · Jun 30, 2026
WASATCH FUNDS TRUST, not summed
|
1,814,406 | ||
| 9 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
5,283,180 | ||
| 10 |
|
4,821,805 | ||
| 10.1 |
State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF
Fund
S000041317 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
1,067,798 | ||
| 10.2 |
State Street(R) SPDR(R) S & P 600(TM) Small Cap Growth ETF
Fund
S000006990 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
316,463 | ||
| 10.3 |
State Street(R) SPDR(R) S & P 600(TM) Small Cap Value ETF
Fund
S000006974 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
301,347 | ||
| 10.4 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
43,100 | ||
| 10.5 |
State Street(R) SPDR(R) Portfolio S&P 1500(R) Composite Stock Market ETF
Fund
S000006973 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
21,437 | ||
| 11 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
3,721,805 | ||
| 12 |
Arsenal Capital Partners III LP
13D
CIK 1541125 · Unknown · Apr 14, 2025
|
3,559,745 | ||
| 13 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,141,689 | ||
| 14 |
ROYCE & ASSOCIATES LP
13F
CIK 906304 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,756,026 | ||
| 14.1 |
Royce Small-Cap Opportunity Fund
Fund
S000009512 · Registered fund · Jun 30, 2026
ROYCE FUND, not summed
|
495,393 | ||
| 14.2 |
Royce Micro-Cap Fund
Fund
S000009506 · Registered fund · Jun 30, 2026
ROYCE FUND, not summed
|
450,686 | ||
| 14.3 |
Royce Capital Fund - Micro-Cap Portfolio
Fund
S000009496 · Registered fund · Jun 30, 2026
ROYCE CAPITAL FUND, not summed
|
148,536 | ||
| 15 |
VANGUARD SMALL-CAP INDEX FUND
Fund
S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
2,673,186 | ||
| 16 |
|
2,666,456 | ||
| 17 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,555,126 | ||
| 18 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,551,111 | ||
| 18.1 |
E*TRADE No Fee Total Market Index Fund
Fund
S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
|
33 | ||
| 19 |
FIRST TRUST ADVISORS LP
13F
CIK 1125816 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,424,222 | ||
| 19.1 |
First Trust Small Cap Core AlphaDEX Fund
Fund
S000017339 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
266,362 | ||
| 19.2 |
First Trust Small Cap Value AlphaDEX Fund
Fund
S000031807 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
35,801 | ||
| 19.3 |
First Trust Active Factor Small Cap ETF
Fund
S000066790 · Registered fund · Aug 31, 2026
First Trust Exchange-Traded Fund VIII, not summed
|
25,818 | ||
| 19.4 |
First Trust Multi Cap Value AlphaDEX Fund
Fund
S000017342 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
6,190 | ||
| 20 |
|
2,360,769 | ||
| 21 |
Touchstone Strategic Trust-Touchstone Small Company Fund
Fund
S000059011 · Registered fund · Jun 30, 2026
Touchstone Strategic Trust, not summed
|
2,195,407 | ||
| 22 |
AQR CAPITAL MANAGEMENT LLC
13F
CIK 1167557 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,160,167 | ||
| 22.1 |
AQR Managed Futures Strategy HV Fund
Fund
S000041117 · Registered fund · Jun 30, 2026
AQR Funds, not summed
|
136,617 | ||
| 22.2 |
AQR Trend Total Return Fund
Fund
S000074759 · Registered fund · Jun 30, 2026
AQR Funds, not summed
|
37,628 | ||
| 23 |
AMERIPRISE FINANCIAL INC
13F
CIK 820027 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,030,844 | ||
| 23.1 |
Columbia Small Cap Value Discovery Fund
Fund
S000012102 · Registered fund · Jul 31, 2026
COLUMBIA FUNDS SERIES TRUST I, not summed
|
1,279,300 | ||
| 23.2 |
Columbia Variable Portfolio - Small Cap Value Discovery Fund
Fund
S000012561 · Registered fund · Jun 30, 2026
COLUMBIA FUNDS VARIABLE INSURANCE TRUST, not summed
|
231,440 | ||
| 23.3 |
Columbia Small Cap Index Fund
Fund
S000010827 · Registered fund · May 31, 2026
COLUMBIA FUNDS SERIES TRUST, not summed
|
178,318 | ||
| 23.4 |
Columbia Research Enhanced Small Cap ETF
Fund
S000095313 · Registered fund · Jun 30, 2026
Columbia ETF Trust I, not summed
|
184 | ||
| 24 |
T. Rowe Price Investment Management, Inc.
13F
CIK 1897612 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,998,373 | ||
| 25 |
SYSTEMATIC FINANCIAL MANAGEMENT LP
13F
CIK 1085936 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,892,050 | ||
| 26 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,798,449 | ||
| 27 |
VANGUARD SMALL-CAP VALUE INDEX FUND
Fund
S000002847 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,694,983 | ||
| 28 |
Boston Partners
13F
CIK 1386060 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,683,885 | ||
| 29 |
Dixon Mitchell Investment Counsel Inc.
13F
CIK 1993485 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,545,956 | ||
| 30 |
Kopion Asset Management, LLC
13F
CIK 1728689 · Registered investment adviser · Sep 30, 2026
|
1,532,364 | ||
| 31 |
Quantinno Capital Management LP
13F
CIK 1759654 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,463,251 | ||
| 32 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,384,426 | ||
| 32.1 |
Goldman Sachs Absolute Return Tracker Fund
Fund
S000020314 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
|
5,670 | ||
| 32.2 |
Goldman Sachs MarketBeta(R) Russell 1000 Value Equity ETF
Fund
S000083006 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
|
1,272 | ||
| 33 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,351,135 | ||
| 34 |
Tejara Capital Ltd
13F
CIK 1879713 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,292,721 | ||
| 35 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,210,449 | ||
| 35.1 |
Small Cap Index Fund
Fund
S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
58,496 | ||
| 35.2 |
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund
S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
|
12,324 | ||
| 35.3 |
Small Cap Core Fund
Fund
S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
11,772 | ||
| 36 |
TWO SIGMA INVESTMENTS, LP
13F
CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,104,605 | ||
| 37 |
CITADEL ADVISORS LLC
13F
CIK 1423053 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,093,243 | ||
| 38 |
Column Small Cap Select Fund
Fund
S000082920 · Registered fund · Aug 31, 2026
Trust for Professional Managers, not summed
|
1,070,403 | ||
| 39 |
ROYCE MICRO-CAP TRUST, INC.
Fund
· Registered fund · Jun 30, 2026
ROYCE MICRO-CAP TRUST, INC., not summed
|
1,051,418 | ||
| 40 |
Gotham Asset Management, LLC
13F
CIK 1510387 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,047,292 | ||
| 41 |
ArrowMark Colorado Holdings LLC
13F
CIK 1483859 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,001,592 | ||
| 41.1 |
Meridian Growth Fund
Fund
S000001462 · Registered fund · Jun 30, 2026
Meridian Fund Inc, not summed
|
445,947 | ||
| 41.2 |
Meridian Small Cap Growth Fund
Fund
S000042770 · Registered fund · Jun 30, 2026
Meridian Fund Inc, not summed
|
223,669 | ||
| 42 |
|
981,498 | ||
| 43 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
977,909 | ||
| 43.1 |
Schwab U.S. Small-Cap ETF
Fund
S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
577,263 | ||
| 43.2 |
Schwab Small-Cap Index Fund
Fund
S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
282,529 | ||
| 43.3 |
Schwab U.S. Broad Market ETF
Fund
S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
74,790 | ||
| 43.4 |
Schwab Total Stock Market Index Fund
Fund
S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
41,727 | ||
| 44 |
ROYAL BANK OF CANADA
13F
CIK 1000275 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
867,767 | ||
| 45 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
772,426 | ||
| 46 |
Rathbones Group PLC
13F
CIK 1351991 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
756,990 | ||
| 47 |
Russell Investments Group, Ltd.
13F
CIK 1692234 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
741,168 | ||
| 47.1 |
U.S. Small Cap Equity Fund
Fund
S000001586 · Registered fund · Jul 31, 2026
RUSSELL INVESTMENT CO, not summed
|
126,679 | ||
| 47.2 |
Multi-Asset Strategy Fund
Fund
S000055522 · Registered fund · Jul 31, 2026
RUSSELL INVESTMENT CO, not summed
|
116,078 | ||
| 47.3 |
Multi-Strategy Income Fund
Fund
S000048356 · Registered fund · Jul 31, 2026
RUSSELL INVESTMENT CO, not summed
|
50,841 | ||
| 47.4 |
U.S. Small Cap Equity Fund
Fund
S000006864 · Registered fund · Jun 30, 2026
RUSSELL INVESTMENT FUNDS, not summed
|
22,588 | ||
| 48 |
Bank of New York Mellon Corp
13F
CIK 1390777 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
731,012 | ||
| 49 |
VANGUARD TAX-MANAGED SMALL-CAP FUND
Fund
S000004387 · Registered fund · Jun 30, 2026
VANGUARD TAX-MANAGED FUNDS, not summed
|
685,993 | ||
| 50 |
RENAISSANCE TECHNOLOGIES LLC
13F
CIK 1037389 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
684,700 |
28 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
Showing 1–50 of 364 holders
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