Security key
Y1146L208
- Security type / class
- Equity / SHS
- Total 13F shares
- 493,941
- Total 13F value
- $1,022,926
- Share change
- +117,673
- SEC-reported price per share
- $2.07
- Number of holders
- 24
- Value change
- +$244,023
- Number of buys
- 12
- Number of sells
- 6
Report period
Q4 2025
Institutions
24
Top holders
10
CTRM full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
Castor Maritime Inc. SEC filings
Castor Maritime Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP Y1146L208
Recent filing periods:
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
30 Sep 2025
13F
Highest disclosed value: $499,200
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 $499.2K.
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
$499.2K
RENAISSANCE TECHNOLOGIES LLC
$88.8K
GOLDMAN SACHS GROUP INC
$60K
Apriem Advisors
$39.5K
SUSQUEHANNA INTERNATIONAL GROUP, LLP
$31.9K
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
|
$499,200
240,000 shares
|
— | 30 Sep 2025 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
—
class O/S missing
|
$88,752
42,669 shares
|
— | 30 Sep 2025 |
| GOLDMAN SACHS GROUP INC |
13F
Company
|
—
class O/S missing
|
$60,004
28,848 shares
|
— | 30 Sep 2025 |
| Apriem Advisors |
13F
Company
|
—
class O/S missing
|
$39,520
19,000 shares
|
— | 30 Sep 2025 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
Company
|
—
class O/S missing
|
$31,895
15,334 shares
|
— | 30 Sep 2025 |
| SIMPLEX TRADING, LLC |
13F
Company
|
—
class O/S missing
|
$28,000
13,471 shares
|
— | 30 Sep 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 Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
24
Shares
493,941
Rows available
24
| 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 Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
18
Q4 2025 holders
24
Holder diff
6
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend