CSBR
Champions Oncology, Inc.Company with tickers: CSBR
CIK
771856
CUSIP
15870P307
Shares Outstanding
13,886,826
13F Activity (30d)
7 filings
7 filers
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 17
Total Value: $28,990,506
Total Shares: 5,041,828
Institutional Ownership Trend
25 quarters
Holder Concentration
Across 17 13F filers · Δ vs Dec 31, 2025Top Holder
48.0%
−2.2 pts
Top 5
95.8%
+0.3 pts
Top 10
99.0%
+0.2 pts
HHI
3,543
Highly concentrated−290
Quarterly Activity
vs Dec 31, 2025
New
4
Increased
2
Decreased
2
Sold Out
5
Unchanged
9
Holder count:
-1
Institutional value:
-13.0%
Shares held:
+4.5%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mid Mesirow Financial Investment Management, Inc. | +5,500 | 15,800 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | +1,358 | 77,177 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Large ACADIAN ASSET MANAGEMENT LLC | −8,672 | 21,323 | |
| Mega NORTHERN TRUST CORP | −214 | 45,932 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 299,520 | $1,722,240 | |
| Mega VANGUARD FIDUCIARY TRUST CO | 32,992 | $189,704 | |
| Mega Vanguard Global Advisers, LLC | 2,093 | $12,034 | |
| Small Cassaday & Co Wealth Management LLC | 10 | $57 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Small Mink Brook Asset Management LLC | 80,305 | $554,907 | |
| Mid GSA CAPITAL PARTNERS LLP | 20,978 | $144,957 | |
| Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 13,031 | $90,044 | |
| Mid WHITTIER TRUST CO | 800 | $5,528 | |
| Mega UBS Group AG | 190 | $1,312 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Small BATTERY MANAGEMENT CORP. | $13,924,619 | 48.03% | 2,421,673 | Shares | Sole | 2026-05-15 | ||||
| Mid NEA Management Company, LLC | $9,853,890 | 33.99% | 1,713,720 | Shares | Defined | 2026-05-15 | ||||
| Mid TOCQUEVILLE ASSET MANAGEMENT L.P. | $1,838,125 | 6.34% | 319,674 | Shares | Sole | 2026-05-12 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $1,722,240 | 5.94% | 299,520 | Shares | Defined | 2026-05-15 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $443,767 | 1.53% | 77,177 | Shares | Defined | 2026-05-15 | ||||
| Mega NORTHERN TRUST CORP Bank | $264,109 | 0.91% | 45,932 | Shares | Defined | 2026-05-14 | ||||
| Large HighTower Advisors, LLC | $202,158 | 0.70% | 35,158 | Shares | Sole | 2026-05-05 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $189,704 | 0.65% | 32,992 | Shares | Defined | 2026-05-08 | ||||
| Mega STATE STREET CORP | $150,667 | 0.52% | 26,203 | Shares | Defined | 2026-05-15 | ||||
| Large ACADIAN ASSET MANAGEMENT LLC | $122,607 | 0.42% | 21,323 | Shares | Defined | 2026-05-13 | ||||
| Small ESSEX INVESTMENT MANAGEMENT CO LLC | $104,931 | 0.36% | 18,249 | Shares | Sole | 2026-05-11 | ||||
| Mid Mesirow Financial Investment Management, Inc. | $90,850 | 0.31% | 15,800 | Shares | Sole | 2026-04-21 | ||||
| Large Cambridge Investment Research Advisors, Inc. | $70,449 | 0.24% | 12,252 | Shares | Sole | 2026-04-30 | ||||
| Mega Vanguard Global Advisers, LLC | $12,034 | 0.04% | 2,093 | Shares | Defined | 2026-05-08 | ||||
| Small Capital Advisors, Ltd. LLC | $276 | 0.00% | 48 | Shares | Sole | 2026-04-16 | ||||
| Small Cassaday & Co Wealth Management LLC | $57 | 0.00% | 10 | Shares | Sole | 2026-05-07 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $23 | 0.00% | 4 | Shares | Defined | 2026-04-28 | ||||
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