Security key
500692108
- Security type / class
- Equity / COM
- Total 13F shares
- 3,354,188
- Total 13F value
- $15,831,665
- Share change
- +2,766,955
- SEC-reported price per share
- $4.72
- Number of holders
- 22
- Value change
- +$12,702,680
- Number of buys
- 10
- Number of sells
- 11
Report period
Q1 2025
Institutions
22
Top holders
10
KOSS full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2025
KOSS CORP SEC filings
KOSS CORP company facts
Broader feeds
Reporting periods
Holder history for CUSIP 500692108
Recent filing periods:
Ownership snapshot
Top reported holders of KOSS - KOSS CORP - COM (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
VANGUARD GROUP INC
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
0/15
Latest evidence
31 Dec 2024
13F
3/4/5
Highest disclosed value: $1,851,944
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
VANGUARD GROUP INC has the largest disclosed position value at $1.85M.
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 VANGUARD GROUP INC's linked filing trail.
Disclosed position value
Top 5
VANGUARD GROUP INC
$1.85M
BlackRock, Inc.
$557.2K
MARSHALL WACE, LLP
$447.1K
GEODE CAPITAL MANAGEMENT, LLC
$444K
CITADEL ADVISORS LLC
$212K
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 |
|---|---|---|---|---|---|
| VANGUARD GROUP INC |
13F
Company
|
—
class O/S missing
|
$1,851,944
250,941 shares
|
— | 31 Dec 2024 |
| BlackRock, Inc. |
13F
Company
|
—
class O/S missing
|
$557,234
75,506 shares
|
— | 31 Dec 2024 |
| MARSHALL WACE, LLP |
13F
Company
|
—
class O/S missing
|
$447,080
60,580 shares
|
— | 31 Dec 2024 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
—
class O/S missing
|
$444,046
60,158 shares
|
— | 31 Dec 2024 |
| CITADEL ADVISORS LLC |
13F
Company
|
—
class O/S missing
|
$211,991
28,725 shares
|
— | 31 Dec 2024 |
| William Jesse Sweasy |
3/4/5
Director
|
—
class O/S missing
|
$146,000
20,000 shares
|
— | 02 Jun 2022 |
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 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
22
Shares
3,354,188
Rows available
22
| 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 2025 vs Q1 2026 Across Filers
Q1 2026 holders
23
Q1 2025 holders
22
Holder diff
-1
| Investor | Q1 2026 Shares | Q1 2025 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend