BlackLine, Inc.
US ˙ NasdaqGS ˙ US09239B1098

SecurityBL / BlackLine, Inc.
InstitutionMan Group plc
Latest Disclosed Ownership28,534 shares
Latest Disclosed Value $ 1,055,758
Man Group plc reports 0.62% increase in ownership of BL / BlackLine, Inc.

On May 15, 2026 - Man Group plc filed a 13F-HR form disclosing ownership of 28,534 shares of BlackLine, Inc. (US:BL) valued at $1,055,758 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 28,359 shares of BlackLine, Inc.. This represents a change in shares of 0.62% during the quarter. The current value of the position is $822,065 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F BLACKLINE COM 09239B109 28,534 175 0.62 1,056 -32.67 0.0019
2026-02-17 2025-12-31 13F BLACKLINE COM 09239B109 28,359 22,392 375.26 1,568 395.89 0.0027
2025-11-14 2025-09-30 13F BLACKLINE COM 09239B109 5,967 1,644 38.03 317 29.51 0.0006
2025-08-14 2025-06-30 13F BLACKLINE COM 09239B109 4,323 4,323 245 0.0005
2025-05-15 2025-03-31 13F BLACKLINE COM 09239B109 0 -25,221 -100.00 0 -100.00
2025-02-14 2024-12-31 13F BLACKLINE COM 09239B109 25,221 1,532 -62.95 0.0040
2023-05-15 2023-03-31 13F BLACKLINE COM 09239B109 4,135 136.69 0.0147
2023-02-14 2022-12-31 13F BLACKLINE COM 09239B109 25,974 1,747 705.07 0.0063
2022-08-15 2022-06-30 13F BLACKLINE COM 09239B109 217 0.0009
2022-05-16 2022-03-31 13F BLACKLINE COM 09239B109 0 -10,006 -100.00 0 -100.00
2022-02-14 2021-12-31 13F BLACKLINE COM 09239B109 10,006 -2,889 -22.40 1,036 -31.93 0.0033
2021-11-15 2021-09-30 13F BLACKLINE COM 09239B109 12,895 195 1.54 1,522 7.71 0.0053
2021-08-16 2021-06-30 13F BLACKLINE COM 09239B109 12,700 -8,196 -39.22 1,413 -37.64 0.0050
2021-05-17 2021-03-31 13F BLACKLINE COM 09239B109 20,896 -4,433 -17.50 2,266 -32.92 0.0100
2021-02-16 2020-12-31 13F BLACKLINE COM 09239B109 25,329 -16,485 -39.42 3,378 -9.87 0.0148
2020-11-16 2020-09-30 13F BLACKLINE COM 09239B109 41,814 -6,659 -13.74 3,748 -6.74 0.0147
2020-08-14 2020-06-30 13F BLACKLINE COM 09239B109 48,473 14,857 44.20 4,019 127.19 0.0203
2020-05-15 2020-03-31 13F BLACKLINE COM 09239B109 33,616 3,194 10.50 1,769 12.75 0.0115
2020-02-18 2019-12-31 13F BLACKLINE COM 09239B109 30,422 -26,147 -46.22 1,569 -41.97 0.0052
2019-11-14 2019-09-30 13F BLACKLINE COM 09239B109 56,569 17,649 45.35 2,704 29.81 0.0100
2019-08-14 2019-06-30 13F BLACKLINE COM 09239B109 38,920 11,402 41.43 2,083 63.37 0.0075
2019-05-15 2019-03-31 13F BLACKLINE COM 09239B109 27,518 27,518 1,275 0.0048
2019-02-14 2018-12-31 13F BLACKLINE COM 09239B109 0 -5,452 -100.00 0 -100.00
2018-11-14 2018-09-30 13F BLACKLINE COM 09239B109 5,452 -63 -1.14 307 27.92 0.0011
2018-08-14 2018-06-30 13F BLACKLINE COM 09239B109 5,515 5,515 240 0.0010
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.