Round Rock Advisors LLC

Position in OCC — Optical Cable Corp

CIK 1846991 WILTON, CT

Position in OCC

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$1,235,908

+$977,914 QoQ

Shares Held

58,937

+88.5% QoQ

Ownership

0.668%

of shares outstanding

% of Portfolio

0.34%

of 13F equity value

Holder Rank

#12

of 43 holders

Holding Since

Dec 2025

3 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Jun 30, 2026

Round Rock Advisors LLC holds $4,508,711 across 3 Communication Equipment names. OCC ranks #2 (27.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	FEIM	Frequency Electronics Inc	46,092	$3,058,204
2	OCC	Optical Cable Corp This page	58,937	$1,235,908
3	CSCO	Cisco Systems, Inc.	1,827	$214,599

3 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$1,235,908	58,937	+88.5%	Shares	Sole	2026-08-12
2026-03-31	$257,994	31,272	0.0%	Shares	Sole	2026-05-15
2025-12-31	$139,160	31,272	—	Shares	Sole	2026-04-07
No filing history on record for this holder in this stock.