Security key
500692108
- Security type / class
- Equity / COM
- Total 13F shares
- 3,373,068
- Total 13F value
- $17,202,328
- Share change
- +18,880
- SEC-reported price per share
- $5.10
- Number of holders
- 20
- Value change
- +$96,872
- Number of buys
- 8
- Number of sells
- 6
Report period
Q2 2025
Institutions
20
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
Lido Advisors, LLC
Disclosed value leader
Lido Advisors, LLC
Comparable rows
0/15
Latest evidence
10 Jun 2025
13F
3/4/5
Highest disclosed value: $13,653,365
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
Lido Advisors, LLC has the largest disclosed position value at $13.65M.
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 Lido Advisors, LLC's linked filing trail.
Disclosed position value
Top 5
Lido Advisors, LLC
$13.65M
John C. Koss Jr.
$4.71M
VANGUARD GROUP INC
$1.19M
BlackRock, Inc.
$352.9K
GEODE CAPITAL MANAGEMENT, LLC
$286.3K
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 |
|---|---|---|---|---|---|
| Lido Advisors, LLC |
13F
Company
|
—
class O/S missing
|
$13,653,365
2,892,662 shares
|
— | 31 Mar 2025 |
| John C. Koss Jr. |
3/4/5
Vice President - Sales
|
—
class O/S missing
|
$4,713,981
809,502 shares
|
— | 10 Jun 2025 |
| VANGUARD GROUP INC |
13F
Company
|
—
class O/S missing
|
$1,192,975
252,749 shares
|
— | 31 Mar 2025 |
| BlackRock, Inc. |
13F
Company
|
—
class O/S missing
|
$352,896
74,766 shares
|
— | 31 Mar 2025 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
—
class O/S missing
|
$286,262
60,638 shares
|
— | 31 Mar 2025 |
| 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 Q2 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
20
Shares
3,373,068
Rows available
20
| 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 Q2 2025 vs Q1 2026 Across Filers
Q1 2026 holders
23
Q2 2025 holders
20
Holder diff
-3
| Investor | Q1 2026 Shares | Q2 2025 Shares | Share Diff | Share Chg % | Q1 2026 value | Q2 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend