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ONTF

ON24 INC.
$8.10 +0.01 (+0.12%) At close · Mar 31
Market Cap
$348.25M
Shares
42,993,702

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 123
Total Value: $220,522,688
Total Shares: 27,225,032
Showing 1–100 of 125 holdings by value · page 1 of 2

Institutional Ownership Trend

21 quarters

Holder Concentration

Across 123 13F filers · Δ vs Dec 31, 2025
Top Holder
30.5%
Jun 2023 → Mar 2026 · range 21.6% – 30.5%
+3.6 pts
Top 5
56.2%
Jun 2023 → Mar 2026 · range 56.2% – 62.7%
−3.6 pts
Top 10
74.2%
Jun 2023 → Mar 2026 · range 73.0% – 78.7%
−2.5 pts
HHI
1,195
Jun 2023 → Mar 2026 · range 906 – 1,195
Broadly held+73

Quarterly Activity

vs Dec 31, 2025
New
42
Increased
43
Decreased
22
Sold Out
32
Unchanged
16
Holder count: +10
Institutional value: -10.4%
Shares held: -11.9%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mid GLAZER CAPITAL, LLC +1,007,404 1,102,841
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP +417,925 1,128,279
Mega MORGAN STANLEY +211,730 631,581
Mega MILLENNIUM MANAGEMENT LLC +198,211 259,973
Mega GOLDMAN SACHS GROUP INC +91,005 239,066

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega JPMORGAN CHASE & CO −1,032,147 87,478
Mega DIMENSIONAL FUND ADVISORS LP −269,962 1,015,844
Micro P.A.W. CAPITAL CORP −140,000 160,000
Mega TWO SIGMA INVESTMENTS, LP −128,917 98,015
Mega STATE STREET CORP −84,516 755,698

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mid ODDO BHF ASSET MANAGEMENT SAS 1,566,256 $12,686,673
Mega VANGUARD CAPITAL MANAGEMENT LLC 1,425,791 $11,548,907
Mega FIL Ltd 1,414,677 $11,458,883
Mid Groupe la Francaise 365,400 $2,959,740
Large GABELLI FUNDS LLC 247,719 $2,006,523

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Micro Indaba Capital Management, L.P. 4,240,256 $33,752,437
Mega VANGUARD GROUP INC 1,978,132 $15,745,929
Large FEDERATED HERMES, INC. 1,234,283 $9,824,892
Large ACADIAN ASSET MANAGEMENT LLC 1,189,707 $9,470,067
Large RENAISSANCE TECHNOLOGIES LLC 553,034 $4,402,150
Filter: New 42 Increased 43 Reduced 22 Sold out 32 Unchanged 16
Showing 100 of 125
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Small Lynrock Lake LP $67,181,189 30.46% 8,293,974
Mega BlackRock, Inc. $21,090,809 9.56% 2,603,804
Mid ODDO BHF ASSET MANAGEMENT SAS $12,686,673 5.75% 1,566,256
Mega VANGUARD CAPITAL MANAGEMENT LLC $11,548,907 5.24% 1,425,791
Mega FIL Ltd $11,458,883 5.20% 1,414,677
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $9,139,059 4.14% 1,128,279
Mid GLAZER CAPITAL, LLC $8,933,012 4.05% 1,102,841
Mega DIMENSIONAL FUND ADVISORS LP $8,228,335 3.73% 1,015,844
Mega GEODE CAPITAL MANAGEMENT, LLC $7,247,231 3.29% 894,720
Mega STATE STREET CORP $6,121,153 2.78% 755,698
Mega MORGAN STANLEY $5,115,803 2.32% 631,581
Mid Groupe la Francaise $2,959,740 1.34% 365,400
Mega NORTHERN TRUST CORP Bank $2,668,163 1.21% 329,403
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $2,566,063 1.16% 316,798
Small Jasper Ridge Partners, L.P. $2,294,924 1.04% 283,324
Mega MILLENNIUM MANAGEMENT LLC $2,105,781 0.95% 259,973
Large GABELLI FUNDS LLC $2,006,523 0.91% 247,719
Small ABC ARBITRAGE SA $2,003,907 0.91% 247,396
Small CREDIT INDUSTRIEL ET COMMERCIAL $1,997,775 0.91% 246,639
Mega VANGUARD FIDUCIARY TRUST CO Bank $1,987,885 0.90% 245,418
Mega GOLDMAN SACHS GROUP INC $1,936,434 0.88% 239,066
Large Quantinno Capital Management LP $1,923,952 0.87% 237,525
Large Squarepoint Ops LLC $1,732,444 0.79% 213,882
Mid Carmignac Gestion $1,446,295 0.66% 178,555
Small Trium Capital LLP $1,430,370 0.65% 176,589
Small GABELLI & Co INVESTMENT ADVISERS, INC. $1,386,720 0.63% 171,200
Micro P.A.W. CAPITAL CORP $1,296,000 0.59% 160,000
Mega AQR CAPITAL MANAGEMENT LLC $1,229,495 0.56% 151,790
Mid ALPINE ASSOCIATES MANAGEMENT INC. $1,187,646 0.54% 146,623
Small OXFORD ASSET MANAGEMENT LLP $907,078 0.41% 111,985
Mega Bank of New York Mellon Corp Bank $897,827 0.41% 110,843
Mid Utah Retirement Systems Pension $798,489 0.36% 98,579
Mega TWO SIGMA INVESTMENTS, LP $793,921 0.36% 98,015
Mid Engineers Gate Manager LP $737,966 0.33% 91,107
Mega UBS Group AG $730,489 0.33% 90,184
Large LMR Partners LLP $729,000 0.33% 90,000
Mega JPMORGAN CHASE & CO $708,570 0.32% 87,478
Mid Skandinaviska Enskilda Banken AB (publ) $603,918 0.27% 74,558
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $522,450 0.24% 64,500
Mega Nuveen, LLC $519,962 0.24% 64,193
Mega BNP PARIBAS ARBITRAGE, SA $498,822 0.23% 61,583
Small WATER ISLAND CAPITAL LLC $488,948 0.22% 60,364
Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS $486,000 0.22% 60,000
Mega PRICE T ROWE ASSOCIATES INC /MD/ $471,509 0.21% 58,211
Mid XTX Topco Ltd $458,557 0.21% 56,612
Mega BARCLAYS PLC $453,186 0.21% 55,949
Mega AMERICAN CENTURY COMPANIES INC $447,379 0.20% 55,232
Mega ALLIANCEBERNSTEIN L.P. $415,611 0.19% 51,310
Mid PRELUDE CAPITAL MANAGEMENT, LLC $405,000 0.18% 50,000
Mega RHUMBLINE ADVISERS $383,073 0.17% 47,293
Small CSS LLC/IL $331,030 0.15% 40,868
Small PenderFund Capital Management Ltd. $303,750 0.14% 37,500
Micro BCK CAPITAL MANAGEMENT LP $299,700 0.14% 37,000
Mega FRANKLIN RESOURCES INC $252,921 0.11% 31,225
Mega FMR LLC $247,495 0.11% 30,555
Small Murchinson Ltd. $243,810 0.11% 30,100
Mid Polar Asset Management Partners Inc. $243,000 0.11% 30,000
Large SG Americas Securities, LLC Broker-Dealer $234,819 0.11% 28,990
Large MERCER GLOBAL ADVISORS INC /ADV $233,709 0.11% 28,853
Mega BANK OF MONTREAL /CAN/ Bank $216,253 0.10% 26,698
Large Balyasny Asset Management L.P. $205,691 0.09% 25,394
Small Opes Wealth Management LLC $182,250 0.08% 22,500
Large MetLife Investment Management, LLC $180,354 0.08% 22,266
Mid Vanguard Personalized Indexing Management, LLC $153,640 0.07% 18,968
Micro Verdad Advisers, LP $152,037 0.07% 18,770
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $144,601 0.07% 17,852
Mega Vanguard Global Advisers, LLC $137,594 0.06% 16,987
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $135,270 0.06% 16,700
Mega WELLS FARGO & COMPANY/MN $114,623 0.05% 14,151
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $100,350 0.05% 12,389
Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $91,926 0.04% 11,349
Small Versant Capital Management, Inc $91,060 0.04% 11,242
Small TWO SIGMA SECURITIES, LLC Broker-Dealer $85,795 0.04% 10,592
Large Corient Private Wealth LLC $81,583 0.04% 10,072
Large Creative Planning $81,453 0.04% 10,056
Large CWM, LLC $76,950 0.03% 9,500
Large Police & Firemen's Retirement System of New Jersey Pension $76,115 0.03% 9,397
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $62,718 0.03% 7,743
Mega PNC FINANCIAL SERVICES GROUP, INC. $56,075 0.03% 6,923
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $32,788 0.01% 4,048
Mega Legal & General Group Plc $27,272 0.01% 3,367
Mid Ameritas Investment Partners, Inc. $25,272 0.01% 3,120
Large Rockefeller Capital Management L.P. $24,380 0.01% 3,010
Mega CITIGROUP INC $18,467 0.01% 2,280
Mid Tower Research Capital LLC (TRC) $17,876 0.01% 2,207
Large NISA INVESTMENT ADVISORS, LLC $16,977 0.01% 2,096
Large Russell Investments Group, Ltd. $16,872 0.01% 2,083
Mid Allworth Financial LP $16,572 0.01% 2,046
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $16,410 0.01% 2,026
Mid SIMPLEX TRADING, LLC $15,187 0.01% 1,875
Micro Fortitude Family Office, LLC Family Office $12,717 0.01% 1,570
Mid GROUP ONE TRADING LLC $12,141 0.01% 1,499
Mid Arax Advisory Partners $9,817 0.00% 1,212
Mid GAMMA Investing LLC $8,901 0.00% 1,099
Small Covestor Ltd $8,634 0.00% 1,066
Mid SIGNATUREFD, LLC $7,184 0.00% 887
Small Essential Partners LLC $6,601 0.00% 815
Mid SBI Securities Co., Ltd. Broker-Dealer $6,350 0.00% 784
Mega ROYAL BANK OF CANADA Bank $6,180 0.00% 763
Mid MassMutual Private Wealth & Trust, FSB $4,819 0.00% 595
Key facts CIK 1110611 CUSIP 68339B104 13F (30d) 1 filings 1 filers Visit website

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