Security key
Y1146L208
- Security type / class
- Equity / SHS
- Total 13F shares
- 374,271
- Total 13F value
- $692,401
- Share change
- -119,685
- SEC-reported price per share
- $1.85
- Number of holders
- 19
- Value change
- -$256,854
- Number of buys
- 7
- Number of sells
- 14
Report period
Q1 2026
Institutions
19
Top holders
10
CTRM full security history
Ownership snapshot
Full 13F holder table
Castor Maritime Inc. SEC filings
Castor Maritime Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of CTRM - Castor Maritime Inc. - SHS (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
TOWERVIEW LLC
Disclosed value leader
TOWERVIEW LLC
Comparable rows
0/15
Latest evidence
18 Mar 2026
13F
3/4/5
Highest disclosed value: $496,800
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
TOWERVIEW LLC has the largest disclosed position value at $496.8K.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens TOWERVIEW LLC's linked filing trail.
Disclosed position value
Top 5
TOWERVIEW LLC
$496.8K
CITADEL ADVISORS LLC
$151.8K
RENAISSANCE TECHNOLOGIES LLC
$84K
SUSQUEHANNA INTERNATIONAL GROUP, LLP
$75.4K
GOLDMAN SACHS GROUP INC
$59.8K
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| TOWERVIEW LLC |
13F
Company
|
—
class O/S missing
|
$496,800
240,000 shares
|
— | 31 Dec 2025 |
| CITADEL ADVISORS LLC |
13F
Company
|
—
class O/S missing
|
$151,849
73,357 shares
|
— | 31 Dec 2025 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
—
class O/S missing
|
$83,978
40,569 shares
|
— | 31 Dec 2025 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
Company
|
—
class O/S missing
|
$75,385
36,418 shares
|
— | 31 Dec 2025 |
| GOLDMAN SACHS GROUP INC |
13F
Company
|
—
class O/S missing
|
$59,846
28,911 shares
|
— | 31 Dec 2025 |
| Apriem Advisors |
13F
Company
|
—
class O/S missing
|
$39,330
19,000 shares
|
— | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
19
Shares
374,271
Rows available
19
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q1 2026 Across Filers
Q1 2026 holders
19
Q1 2026 holders
19
Holder diff
0
| Investor | Q1 2026 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2026 value | Value change | Value Chg % |
|---|