undamentalytics Newsletter

Optical Cable Corp: which funds bought and sold

Institutions that bought and sold Optical Cable shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 24 institutions that filed 13F reports for both quarters added to or opened positions in Optical Cable, and 19 cut or closed them. Together they added a net 433K shares, +25.3% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 62K shares (+28.9%); index fund managers were net buyers of 146K shares (+36.3%). 10 opened a new position and 5 sold out entirely.

Bought, Q2 2026 24 institutions, 10 of them new holders Sold, Q2 2026 19 institutions, 5 of them sold out
Net change, all compared +433K shares (+25.3%)
Net change, active managers +62K shares (+28.9%), 3 bought, 2 sold

Buyers versus sellers

institutions compared, 48
Active managers and hedge funds 3 bought · 2 sold · +62K
Index fund managers 4 bought · 2 sold · +146K
Other institutions 17 bought · 15 sold · +225K

Biggest buyers

by change in shares held
Biggest buyers
Institution Change in shares Shares June 30, 2026 Value
Jane Street Group, LLC +237K +432.8% 292K $6.1M
Blackrock, Inc. Index funds +96K +257.1% 133K $2.8M
HRT Financial LP +90K +518.9% 108K $2.3M
Vanguard Capital Management LLC Index funds +49K +23.1% 260K $5.5M
Bridgeway Capital Management, LLC Active manager +39K +80.2% 87K $1.8M
Cetera Investment Advisers +28K New position 28K $595,737
Two Sigma Investments, LP Hedge fund +28K +39.3% 98K $2.1M
Round Rock Advisors LLC +28K +88.5% 59K $1.2M
Mangrove Partners Im, LLC Hedge fund +20K New position 20K $422,839
Brendel Financial Advisors LLC +18K New position 18K $381,801
Dynamic Technology Lab Private Ltd +15K New position 15K $325,000
Essex Investment Management Co LLC +13K New position 13K $264,830
Bank Of New York Mellon Corp +10K New position 10K $216,360
Morgan Stanley +3,739 +19.8% 23K $475,285
Vanguard Fiduciary Trust Co Index funds +3,243 +10.0% 36K $749,405
Citigroup Inc +2,048 +204800.0% 2,049 $42,968
Osaic Holdings, Inc. +2,025 +1620.0% 2,150 $45,085
Tower Research Capital LLC (TRC) +1,125 +457.3% 1,371 $28,750
Allworth Financial LP +1,000 New position 1,000 $20,970
Northern Trust Corp Index funds +541 +4.3% 13K $274,938

Biggest sellers

by change in shares held
Biggest sellers
Institution Change in shares Shares June 30, 2026 Value
Sei Investments Co −54K −58.8% 38K $788,619
Legacy Financial Advisors, Inc. −33K Sold out 0 —
Gendell Jeffrey L −26K −6.2% 392K $8.2M
Dimensional Fund Advisors LP −23K −13.8% 145K $3M
Mercer Global Advisors Inc −18K Sold out 0 —
UBS Group AG −15K −68.5% 7,078 $148,426
Shikiar Asset Management Inc −14K −48.1% 15K $306,000
Centiva Capital, LP Hedge fund −13K Sold out 0 —
Mackenzie Financial Corp −13K Sold out 0 —
Informed Momentum Co LLC −12K −15.4% 63K $1.3M
Renaissance Technologies LLC Hedge fund −11K −13.7% 72K $1.5M
Virtu Financial LLC −11K Sold out 0 —
Rbf Capital, LLC −3,999 −20.0% 16K $335,520
Geode Capital Management, LLC Index funds −2,176 −3.0% 70K $1.5M
Vanguard Global Advisers, LLC −1,724 −41.4% 2,443 $51,230
Gsa Capital Partners LLP −1,683 −5.1% 31K $651,000
State Street Corp Index funds −200 −0.5% 37K $766,936
Sbi Securities Co., Ltd. −20 −16.7% 100 $2,097
Royal Bank Of Canada −13 −5.1% 241 $5,000

New positions

largest by value

Sold out

largest by value
InstitutionSharesValue March 31, 2026
Legacy Financial Advisors, Inc. 33K $275,492
Mercer Global Advisors Inc 18K $148,500
Centiva Capital, LPHedge fund 13K $107,531
Mackenzie Financial Corp 13K $103,348
Virtu Financial LLC 11K $94,000

Who holds the shares

13F holdings at June 30, 2026
Institutions reporting
43
Ten largest holders
77.3%
of 13F-reported shares
Index fund managers
25.6%
of 13F-reported shares
Active managers and hedge funds
12.9%
of 13F-reported shares
Buying and selling by type of institution, March 31, 2026 to June 30, 2026
TypeBoughtSoldNewSold outNet change in sharesNet %
Active managers and hedge funds 3 2 1 1 +62K +28.9%
Index fund managers 4 2 0 0 +146K +36.3%
Other institutions 17 15 9 4 +225K +20.6%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

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