Latest Period
Q1 2026
Security Snapshot
ON24 INC. - Common Stock, par value $0.0001 per share (ONTF) Institutional Ownership
CUSIP: 68339B104
13F Institutional Holders and Ownership History from Q1 2021 to Q1 2026
Institutions Reporting
122
Shares (Excl. Options)
27,180,154
Price
$8.10
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- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Symbol
- ONTF
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 27,180,154
- Total 13F value
- $220,146,131
- Portfolio coverage rank
- 0%
- Share change
- -3,630,136
- Value change
- -$28,063,625
- Number of holders
- 122
- Shares outstanding
- 42,358,287
- SEC-reported price per share
- $8.10
- Insider filing price
- $8.10
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ONTF - ON24 INC. - Common Stock, par value $0.0001 per share is tracked under CUSIP 68339B104.
- 122 institutions reported positions in Q1 2026.
- 2 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 111 to 122 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $245,778,028 to $220,146,131.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 122 institutions filings for Q1 2026.
Security key
68339B104
Latest holder period
Q1 2026
13F holders
122
13D/G owners
2
CIK / CUSIP context first
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 68339B104:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
2
Security
ONTF
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 5.3% | $10,576,819 | 2,260,004 | BlackRock, Inc. | 31 Mar 2025 | |||
| VANGUARD GROUP INC | 4.7% | $15,745,931 | 1,978,132 | The Vanguard Group | 31 Dec 2025 |
As of 31 Mar 2026, 122 institutional investors reported holding 27,180,154 shares of ON24 INC. - Common Stock, par value $0.0001 per share (ONTF). This represents 64% of the company’s total 42,358,287 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
58%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Lynrock Lake LP | 20% | 8,293,974 | 0% | 4.6% | $67,181,189 |
| BlackRock, Inc. | 6.1% | 2,603,804 | -3% | 0% | $21,090,813 |
| ODDO BHF ASSET MANAGEMENT SAS | 3.7% | 1,566,256 | 0.5% | $12,686,674 | |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.4% | 1,425,791 | 0% | 0% | $11,548,907 |
| FIL Ltd | 3.3% | 1,414,677 | 0.01% | $11,458,884 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.7% | 1,128,279 | +59% | 0% | $9,139,060 |
| GLAZER CAPITAL, LLC | 2.6% | 1,102,841 | +1056% | 0.19% | $8,933,000 |
| DIMENSIONAL FUND ADVISORS LP | 2.4% | 1,015,844 | -21% | 0% | $8,228,286 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.1% | 894,720 | +4.8% | 0% | $7,240,728 |
| STATE STREET CORP | 1.8% | 755,698 | -10% | 0% | $6,121,154 |
| MORGAN STANLEY | 1.5% | 631,581 | +50% | 0% | $5,115,814 |
| Groupe la Francaise | 0.86% | 365,400 | 0.04% | $2,959,740 | |
| NORTHERN TRUST CORP | 0.78% | 329,403 | +4.2% | 0% | $2,668,164 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.75% | 316,798 | -2.7% | 0% | $2,566,064 |
| Jasper Ridge Partners, L.P. | 0.67% | 283,324 | 0% | 0.05% | $2,294,924 |
| MILLENNIUM MANAGEMENT LLC | 0.61% | 259,973 | +321% | 0% | $2,105,781 |
| GABELLI FUNDS LLC | 0.58% | 247,719 | 0.01% | $2,006,524 | |
| ABC ARBITRAGE SA | 0.58% | 247,396 | 0.27% | $2,003,908 | |
| CREDIT INDUSTRIEL ET COMMERCIAL | 0.58% | 246,639 | 0.32% | $1,997,776 | |
| VANGUARD FIDUCIARY TRUST CO | 0.58% | 245,418 | 0% | 0% | $1,987,886 |
| GOLDMAN SACHS GROUP INC | 0.56% | 239,066 | +61% | 0% | $1,936,435 |
| Quantinno Capital Management LP | 0.56% | 237,525 | +44% | 0% | $1,923,952 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 0.51% | 215,043 | 0% | 0% | $1,741,848 |
| Squarepoint Ops LLC | 0.5% | 213,882 | 0% | $1,732,444 | |
| Trium Capital LLP | 0.42% | 176,589 | 1% | $1,430,371 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
21
Latest
Q1 2026
Rows shown
1-21 of 21
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 27,180,154 | $220,146,131 | -$28,063,625 | $8.10 | 122 |
| 2025 Q4 | 30,876,770 | $245,778,028 | -$3,875,144 | $7.96 | 111 |
| 2025 Q3 | 31,390,230 | $179,557,192 | +$533,113 | $5.72 | 101 |
| 2025 Q2 | 31,288,637 | $169,900,312 | +$9,360,590 | $5.43 | 88 |
| 2025 Q1 | 29,594,898 | $153,896,696 | +$320,811 | $5.20 | 97 |
| 2024 Q4 | 29,430,829 | $190,116,940 | +$596,650 | $6.46 | 109 |
| 2024 Q3 | 29,167,507 | $178,509,357 | -$2,548,698 | $6.12 | 106 |
| 2024 Q2 | 29,580,437 | $177,773,555 | -$4,097,481 | $6.01 | 107 |
| 2024 Q1 | 30,176,286 | $215,474,690 | -$1,050,011 | $7.14 | 110 |
| 2023 Q4 | 30,253,203 | $238,397,093 | -$14,974,211 | $7.88 | 111 |
| 2023 Q3 | 31,929,173 | $202,114,962 | -$15,287,204 | $6.33 | 104 |
| 2023 Q2 | 33,914,585 | $275,398,821 | -$18,945,992 | $8.12 | 117 |
| 2023 Q1 | 36,355,607 | $318,447,494 | -$5,223,702 | $8.76 | 112 |
| 2022 Q4 | 36,835,804 | $317,899,384 | -$5,973,812 | $8.63 | 128 |
| 2022 Q3 | 37,357,345 | $328,766,309 | +$6,524,144 | $8.80 | 99 |
| 2022 Q2 | 36,421,939 | $345,638,980 | +$11,398,673 | $9.49 | 90 |
| 2022 Q1 | 34,833,815 | $456,508,535 | +$12,689,873 | $13.15 | 101 |
| 2021 Q4 | 33,491,072 | $581,025,767 | +$100,285,435 | $17.35 | 104 |
| 2021 Q3 | 27,263,390 | $543,651,352 | +$206,520,196 | $19.94 | 96 |
| 2021 Q2 | 15,049,158 | $534,205,000 | -$23,588,070 | $35.48 | 67 |
| 2021 Q1 | 15,061,567 | $728,727,380 | +$728,552,377 | $48.51 | 74 |