Black Diamond Therapeutics, Inc.
US ˙ NasdaqGS ˙ US09203E1055

SecurityBDTX / Black Diamond Therapeutics, Inc.
InstitutionStifel Financial Corp
Latest Disclosed Ownership278,645 shares
Latest Disclosed Value $ 593,515
Stifel Financial Corp reports 1.33% increase in ownership of BDTX / Black Diamond Therapeutics, Inc.

On May 12, 2026 - Stifel Financial Corp filed a 13F-HR form disclosing ownership of 278,645 shares of Black Diamond Therapeutics, Inc. (US:BDTX) valued at $593,514 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 274,995 shares of Black Diamond Therapeutics, Inc.. This represents a change in shares of 1.33% during the quarter. The current value of the position is $582,368 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)
2026-05-12 2026-03-31 13F BLACK DIAMOND THERAPEUTICS I COM 09203E105 278,645 3,650 1.33 594 -11.23 0.0001
2026-02-13 2025-12-31 13F BLACK DIAMOND THERAPEUTICS I COM 09203E105 274,995 52,750 23.74 668 -20.67 0.0006
2025-11-12 2025-09-30 13F BLACK DIAMOND THERAPEUTICS I COM 09203E105 222,245 2,300 1.05 842 54.50 0.0008
2025-08-14 2025-06-30 13F BLACK DIAMOND THERAPEUTICS I COM 09203E105 219,945 13,045 6.30 545 70.31 0.0005
2025-05-14 2025-03-31 13F BLACK DIAMOND THERAPEUTICS I COM 09203E105 206,900 40,900 24.64 321 -9.86 0.0003
2025-02-13 2024-12-31 13F BLACK DIAMOND THERAPEUTICS I COM 09203E105 166,000 15,676 10.43 355 -45.64 0.0004
2024-11-14 2024-09-30 13F BLACK DIAMOND THERAPEUTICS I COM 09203E105 150,324 2,824 1.91 654 -4.95 0.0007
2024-08-13 2024-06-30 13F BLACK DIAMOND THERAPEUTICS I COM 09203E105 147,500 -800 -0.54 687 -8.52 0.0008
2024-05-14 2024-03-31 13F BLACK DIAMOND THERAPEUTICS I COM 09203E105 148,300 36,600 32.77 752 139.94 0.0009
2024-02-12 2023-12-31 13F BLACK DIAMOND THERAPEUTICS I COM 09203E105 111,700 91,600 455.72 314 449.12 0.0004
2023-11-13 2023-09-30 13F BLACK DIAMOND THERAPEUTICS I COM 09203E105 20,100 20,100 58 0.0001
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.