Blackline, Inc.

Exchange: Nasdaq
Industry: Services-Prepackaged Software
SEC CIK: 0001666134

SEC filings (opens in a new tab)

In the last 90 days, Blackline, Inc. insiders filed 0 open-market purchases and 2 sales; 247 institutions reported holding it in 13F filings for Q2 2026, worth $1.70B in total; no superinvestor holds it.

Q1 2026 vs. Q4 2025

How the institutions holding Blackline, Inc. changed between Q4 2025 and Q1 2026.

All holders in Q1 2026 All holders in Q4 2025

13F holders of BL: Q4 2025 compared with Q1 2026
Measure	Q4 2025	Of which not filed for Q1 2026	Q1 2026	Change
Holders	308	5	279	−24
Shares	64.2M	8.43M	64.0M	+8.23M (+14.8%)
Value	$3.55B	$466.2M	$2.37B	−$714.5M (−23.2%)

5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (55)

Institutions that held Blackline, Inc. at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to BL in Q1 2026
Institution	Shares	Value	% of portfolio
Vanguard Portfolio Management LLC	4,062,856	$150.3M	0.01%
Vanguard Capital Management LLC	2,349,160	$86.9M	0.00%
Arrowstreet Capital, Limited Partnership	468,519	$17.3M	0.01%
Vanguard Fiduciary Trust Co	349,982	$12.9M	0.00%
Invenomic Capital Management LP	235,012	$8.70M	0.40%
Balyasny Asset Management LLC	210,169	$7.78M	0.02%
Armistice Capital, LLC	168,000	$6.22M	0.21%
Tejara Capital Ltd	162,300	$6.01M	1.98%
Portolan Capital Management, LLC	159,026	$5.88M	0.31%
XTX Topco Ltd	147,170	$5.45M	0.09%
Natixis	135,822	$5.03M	0.02%
Two Sigma Investments, LP	85,625	$3.17M	0.00%
Harbor Capital Advisors, Inc.	50,330	$1.86M	0.15%
Shay Capital LLC	49,820	$1.84M	0.26%
Vanguard Asset Management, Ltd	48,302	$1.79M	0.00%
ExodusPoint Capital Management, LP	47,230	$1.75M	0.02%
Hussman Strategic Advisors, Inc.	42,000	$1.55M	0.34%
Mackenzie Financial Corp	22,421	$829.6K	0.00%
P Schoenfeld Asset Management LP	21,500	$795.5K	0.63%
Vanguard Global Advisers, LLC	20,425	$755.7K	0.00%
Inceptionr LLC	19,290	$713.7K	0.17%
IMC-Chicago, LLC	18,216	$674.0K	0.01%
DRW Securities, LLC	16,894	$625.1K	0.03%
Numerai GP LLC	16,580	$613.5K	0.06%
Oppenheimer & Co Inc	15,100	$558.7K	0.01%
Vanguard Investments Australia, Ltd.	12,191	$451.1K	0.00%
Skopos Labs, Inc.	11,936	$441.6K	0.01%
Acadian Asset Management LLC	9,793	$362.0K	0.00%
CenterBook Partners LP	8,829	$326.7K	0.02%
Caption Management, LLC	7,761	$287.2K	0.01%
Freestone Grove Partners LP	1,765	$65.3K	0.00%
Clear Street Markets LLC	472	$17.5K	0.01%
Vanguard National Trust Co	284	$10.5K	0.00%
Quarry LP	200	$7.40K	0.00%
PlanVest Financial, Inc	200	$7.40K	0.01%
Whittier Trust Co	201	$7.27K	0.00%
IFP Advisors, Inc	134	$4.96K	0.00%
Bank of Jackson Hole Trust	120	$4.44K	0.00%
Zions Bancorporation, National Association	62	$2.29K	0.00%
Root Financial Partners, LLC	62	$2.29K	0.00%
Private Wealth Management Group, LLC	51	$1.89K	0.00%
Advisory Services Network, LLC	49	$1.81K	0.00%
Kilter Group LLC	35	$1.29K	0.00%
Gill Capital Partners, LLC	26	$962	0.00%
Caitong International Asset Management Co., Ltd	19	$703	0.00%
Twin Peaks Wealth Advisors, LLC	19	$703	0.00%
TopTier Wealth Management, LLC	18	$666	0.00%
Central Trust Co	15	$555	0.00%
Rossby Financial, LCC	15	$547	0.00%
Sunrise Financial Services, LLC	9	$333	0.00%
UMA Financial Services, Inc.	8	$296	0.00%
SJS Investment Consulting Inc.	6	$222	0.00%
Transamerica Financial Advisors, Inc.	3	$111	0.00%
Cedar Mountain Advisors, LLC	2	$74	0.00%
Hughes Financial Services, LLC	2	$74	0.00%

Sold out (79)

Institutions that held Blackline, Inc. at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of BL in Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Teacher Retirement System of Texas	475,665	$26.3M
Riverbridge Partners LLC	372,814	$20.6M
PSquared Asset Management AG	304,576	$16.8M
Ananym Capital Management, LP	253,482	$14.0M
Topline Capital Management, LLC	237,173	$13.1M
Woodline Partners LP	200,378	$11.1M
Cinctive Capital Management LP	199,544	$11.0M
Segall Bryant & Hamill, LLC	191,031	$10.6M
Governors Lane LP	118,602	$6.56M
Susquehanna Fundamental Investments, LLC	112,010	$6.19M
Robeco Institutional Asset Management B.V.	100,000	$5.53M
Soros Fund Management LLCSuperinvestorSoros Fund Management	75,000	$4.15M
Tudor Investment Corp Et Al	73,273	$4.05M
Sone Capital Management, LLC	64,277	$3.55M
Portman Square Capital LLP	59,630	$3.30M
Winton Group Ltd	50,371	$2.79M
Canada Pension Plan Investment Board	47,400	$2.62M
State of New Jersey Common Pension Fund D	39,787	$2.20M
Bridgewater Associates, LP	33,231	$1.84M
Capstone Investment Advisors, LLC	25,599	$1.42M
Harvest Management LLC	22,000	$1.22M
Susquehanna Portfolio Strategies, LLC	21,748	$1.20M
Athos Capital Ltd	20,000	$1.11M
Dark Forest Capital Management LP	19,408	$1.07M
Diametric Capital, LP	15,993	$884.3K
Campbell & CO Investment Adviser LLC	15,944	$881.5K
Quest Partners LLC	11,265	$622.8K
Pinnacle Financial Partners, Inc.	10,578	$584.9K
Unique Wealth Strategies, LLC	10,357	$572.6K
Brown Advisory Inc	8,635	$477.4K
Resona Asset Management Co.,Ltd.	7,650	$423.0K
Papamarkou Wellner Asset Management inc.	6,997	$386.9K
Franklin Resources Inc	5,335	$295.0K
Janney Montgomery Scott LLC	5,043	$279.0K
Legato Capital Management LLC	4,923	$272.2K
Oppenheimer Asset Management Inc.	4,901	$271.0K
Stifel Financial Corp	4,821	$266.6K
Atria Investments LLC	4,770	$263.7K
Third View Private Wealth, LLC	4,766	$263.5K
MML Investors Services, LLC	4,731	$261.6K
Boothbay Fund Management, LLC	4,555	$251.8K
Hennion & Walsh Asset Management, Inc.	4,464	$246.8K
Abel Hall, LLC	4,334	$239.6K
Two Sigma Advisers, LP	4,300	$237.7K
DF Dent & Co Inc	4,270	$236.1K
Northwestern Mutual Wealth Management Co	4,151	$229.5K
Xponance, Inc.	4,118	$227.7K
ZWJ Investment Counsel Inc	4,043	$223.5K
Prelude Capital Management, LLC	3,979	$220.0K
Virtu Financial LLC	3,807	$210.0K
Farringdon Capital, Ltd.	3,787	$209.4K
Hardy Reed LLC	3,715	$205.4K
Crossmark Global Holdings, Inc.	3,712	$205.2K
Alamar Capital Management, LLC	3,700	$204.6K
Stanley-Laman Group, Ltd.	3,680	$203.5K
St Germain D J Co Inc	3,173	$175.4K
CVA Family Office, LLC	615	$34.0K
Kestra Advisory Services, LLC	504	$27.9K
EFG International AG	308	$17.0K
Measured Wealth Private Client Group, LLC	278	$15.4K
SageView Advisory Group, LLC	273	$15.1K
Sound Income Strategies, LLC	162	$8.53K
Pier Capital, LLC	113	$6.25K
CBIZ Investment Advisory Services, LLC	80	$4.42K
Assetmark, Inc	43	$2.38K
Tucker Asset Management LLC	38	$2.10K
Your Advocates Ltd., LLP	22	$1.22K
SRS Capital Advisors, Inc.	21	$1.16K
Montag A & Associates Inc	14	$782
TD Private Client Wealth LLC	11	$608
Ankerstar Wealth, LLC	11	$608
Optima Capital LLC	11	$608
True Wealth Design, LLC	8	$443
Gilpin Wealth Management, LLC	4	$222
Abound Wealth Management	3	$166
Strategic Advocates LLC	2	$114
DV Trading LLC	2	$111
Aster Capital Management (DIFC) Ltd	2	$111
Avion Wealth	11	$0

Not filed for Q1 2026 yet (5)

Institutions that held Blackline, Inc. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding BL in Q4 2025 that haven't filed for Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Vanguard Group Inc	6,795,523	$375.7M
Norges Bank	1,461,152	$80.8M
Comerica Bank	172,211	$9.52M
CIBC Private Wealth Group, LLC	1,823	$100.8K
Global Retirement Partners, LLC	1,220	$67.5K