Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in BL held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 7.7M | $284.2M | +0.4% | 12.896% | 0.00% |
| 2 | CLEARLAKE CAPITAL GROUP, L.P. | 5.7M | $211.4M | 0.0% | 9.591% | 31.06% |
| 3 | UBS Group AG | 4.2M | $155.0M | +38.0% | 7.033% | 0.02% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 4.1M | $150.3M | — | 6.821% | 0.01% |
| 5 | Fivespan Partners, LP | 3.0M | $111.5M | +225.5% | 5.060% | 29.55% |
| 6 | FIRST MANHATTAN CO | 2.7M | $99.0M | +10.2% | 4.494% | 0.27% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2.3M | $86.9M | — | 3.944% | 0.00% |
| 8 | ICONIQ Capital, LLC | 2.1M | $77.2M | 0.0% | 3.504% | 1.73% |
| 9 | STATE STREET CORP | 2.0M | $75.5M | +2.1% | 3.426% | 0.00% |
| 10 | Neuberger Berman Group LLC | 2.0M | $74.9M | -6.1% | 3.399% | 0.06% |
| 11 | HAWK RIDGE CAPITAL MANAGEMENT LP | 1.9M | $70.0M | +26.3% | 3.175% | 2.54% |
| 12 | Conestoga Capital Advisors, LLC | 1.7M | $62.4M | -8.8% | 2.830% | 1.25% |
| 13 | WESTWOOD HOLDINGS GROUP INC | 1.5M | $53.9M | -4.2% | 2.446% | 0.39% |
| 14 | Engaged Capital LLC | 1.4M | $50.6M | +26.2% | 2.296% | 16.68% |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 1.2M | $45.7M | -0.9% | 2.072% | 0.00% |
| 16 | MORGAN STANLEY | 1.1M | $40.1M | -15.0% | 1.819% | 0.00% |
| 17 | DIMENSIONAL FUND ADVISORS LP | 1.1M | $39.4M | +20.6% | 1.786% | 0.01% |
| 18 | BANK OF AMERICA CORP /DE/ | 915K | $33.8M | +9.3% | 1.536% | 0.00% |
| 19 | FMR LLC | 885K | $32.8M | -30.2% | 1.486% | 0.00% |
| 20 | Tensile Capital Management LP | 751K | $27.8M | -5.1% | 1.260% | 3.98% |
| 21 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 627K | $23.2M | +874.2% | 1.052% | 0.00% |
| 22 | FIRST TRUST ADVISORS LP | 617K | $22.8M | +34.9% | 1.035% | 0.02% |
| 23 | NORTHERN TRUST CORP | 592K | $21.9M | -7.2% | 0.993% | 0.00% |
| 24 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 521K | $19.3M | +7.9% | 0.874% | 0.00% |
| 25 | GOLDMAN SACHS GROUP INC | 509K | $18.8M | -32.4% | 0.855% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in BL — a direct measure of their conviction.
Filings activity in BL during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 265 | 10% | 136.47% | 63.52 pp | $2.34B | 35% |
| Q4 2025 | 295 | +12% | 199.99% | +5.38 pp | $3.60B | +8.2% |
| Q3 2025 | 263 | 8.7% | 194.61% | 5.38 pp | $3.33B | 10% |
| Q2 2025 | 288 | +7.9% | 199.99% | +4.85 pp | $3.71B | +11% |
| Q1 2025 | 267 | 9.8% | 195.14% | 4.85 pp | $3.34B | 5.7% |
| Q4 2024 | 296 | +5.7% | 199.99% | +12.26 pp | $3.54B | +10% |
| Q3 2024 | 280 | 8.2% | 187.73% | +13.28 pp | $3.21B | +7.6% |
| Q2 2024 | 305 | — | 174.45% | — | $2.99B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying BL stock.
Based on Q1 2026 13F filings, institutional ownership of BlackLine, Inc. stands at 136.5%, held across 265 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of BL, with approximately 7,680,962 shares worth $0.28B as of Q1 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of BL, including SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for BL is 28 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
54 institutions opened new positions in BL during Q1 2026, while 84 fully exited. 34 added to existing positions and 176 trimmed.
BL institutional ownership fell by 63.52 percentage points quarter-over-quarter, with a net change of -30 holders.
The top 10 institutions account for 56.8% of all reported 13F value in BL, and the top 25 account for 80.9%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
BlackLine, Inc. (BL) Institutional Ownership