Compass Therapeutics, Inc.
US ˙ NasdaqCM ˙ US20454B1044

SecurityCMPX / Compass Therapeutics, Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership1,843,286 shares
Ownership 1.30%
Janus Henderson Group Plc ownership in CMPX / Compass Therapeutics, Inc.

2024-11-14 - Janus Henderson Group Plc has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 1,843,286 shares of Compass Therapeutics, Inc. (US:CMPX). This represents 1.3 percent ownership of the company. In their previous filing dated 2024-02-01 , Janus Henderson Group Plc had reported owning 7,647,740 shares, indicating a decrease of -75.90 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2024-11-14 2024-11-14 13G/A 7,647,740 1,843,286 -75.90 1.30 -78.33
2024-02-01 2024-02-01 13G 7,647,740 6.00

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-05-18 2026-03-31 13F/A-1 COMPASS THERAPEUTICS COM 20454B104 55,600 55,600 294 0.0000
2026-05-15 2026-03-31 13F COMPASS THERAPEUTICS COM 20454B104 55,600 55,600 294 0.0001
2025-02-14 2024-12-31 13F COMPASS THERAPEUTICS COM 20454B104 0 -1,843,286 -100.00 0 -100.00
2024-11-14 2024-09-30 13F COMPASS THERAPEUTICS COM 20454B104 1,843,286 -3,373,056 -64.66 3,364 -41.66 0.0017
2024-08-14 2024-06-30 13F COMPASS THERAPEUTICS COM 20454B104 5,216,342 -1,276,558 -19.66 5,764 -55.05 0.0031
2024-05-15 2024-03-31 13F COMPASS THERAPEUTICS COM 20454B104 6,492,900 -54,331 -0.83 12,823 25.96 0.0070
2024-02-14 2023-12-31 13F COMPASS THERAPEUTICS COM 20454B104 6,547,231 -113,407 -1.70 10,181 -22.22 0.0061
2023-11-14 2023-09-30 13F COMPASS THERAPEUTICS COM 20454B104 6,660,638 441,897 7.11 13,088 -33.61 0.0086
2023-08-14 2023-06-30 13F COMPASS THERAPEUTICS COM 20454B104 6,218,741 214,268 3.57 19,713 0.49 0.0123
2023-05-15 2023-03-31 13F COMPASS THERAPEUTICS COM 20454B104 6,004,473 65,183 1.10 19,616 -34.18 0.0129
2023-02-14 2022-12-31 13F COMPASS THERAPEUTICS COM 20454B104 5,939,290 2,416,310 68.59 29,803 269.39 0.0213
2023-01-13 2022-09-30 13F/A-1 COMPASS THERAPEUTICS COM 20454B104 3,522,980 175,809 5.25 8,068 -8.35 0.0060
2022-11-14 2022-09-30 13F COMPASS THERAPEUTICS COM 20454B104 3,522,980 175,809 8,068 0.0020
2022-08-15 2022-06-30 13F COMPASS THERAPEUTICS COM 20454B104 3,347,171 153,877 4.82 8,803 103.44 0.0061
2022-05-16 2022-03-31 13F COMPASS THERAPEUTICS COM 20454B104 3,193,294 1,720,683 116.85 4,327 -7.90 0.0021
2022-02-14 2021-12-31 13F COMPASS THERAPEUTICS COM 20454B104 1,472,611 1,472,611 4,698 0.0020
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.