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Who owns Blackline (BL) stock

231 funds reported Blackline (BL) shares in their latest 13F filings, worth $1.9B in all. The largest holder is Vanguard Group ($376M). Last quarter 101 funds added to their stakes and 146 cut them. Members of Congress and other officials disclosed 1 trade (0 buys, 1 sales).

Largest holders of BL (13F)Largest holders of BL (13F)Vanguard Group$376MBlackRock$231MClearlake Capital Group, L.P.$160MVanguard Portfolio Management LLC$107MFivespan Partners, LP$94.4MFirst Manhattan Co. LLC.$67.5MVanguard Capital Management LLC$65.7MState Street$60.6MNeuberger Berman Group LLC$50.7MWestwood Holdings Group$37.0M

Largest holders (13F)

FundSharesValueChangeQuarter
Vanguard Group6,795,523$376Mdecrease2025-12-31
BlackRock8,240,055$231Mincrease2026-06-30
Clearlake Capital Group, L.P.5,712,300$160Munchanged2026-06-30
Vanguard Portfolio Management LLC3,801,905$107Mdecrease2026-06-30
Fivespan Partners, LP3,363,943$94.4Mincrease2026-06-30
First Manhattan Co. LLC.2,403,510$67.5Mdecrease2026-06-30
Vanguard Capital Management LLC2,341,157$65.7Mdecrease2026-06-30
State Street2,159,214$60.6Mincrease2026-06-30
Neuberger Berman Group LLC1,805,786$50.7Mdecrease2026-06-30
Westwood Holdings Group1,318,230$37.0Mdecrease2026-06-30
Geode Capital Management, LLC1,282,083$36.0Mincrease2026-06-30
Hawk Ridge Capital Management LP1,197,966$33.6Mdecrease2026-06-30
Morgan Stanley1,135,245$31.9Mincrease2026-06-30
Lynrock Lake LP1,066,666$29.9Mnew2026-06-30
Goldman Sachs Group1,001,741$28.1Mincrease2026-06-30

Trades by Congress and other officials

DateWhoTradeAmount
2025-10-31Lisa McClainsale$1K–$15K

Blackline's latest quarter

Blackline, Q3 2026: revenue $193M (+8% year over year), operating margin 8.6%, net earnings $10.6M, operating cash flow $67.1M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most BL stock?

By the latest 13F filings: Vanguard Group ($376M); BlackRock ($231M); Clearlake Capital Group, L.P. ($160M); Vanguard Portfolio Management LLC ($107M); Fivespan Partners, LP ($94.4M).

Has Congress traded BL stock?

Officials disclosed 1 trade on file: 0 buys and 1 sales. The latest: Lisa McClain, sale on 2025-10-31.

What is the short interest in BL?

4,955,928 shares were sold short at the 2026-10-15 settlement, -10.13% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.