Optical Cable Corporation
US ˙ NasdaqGM ˙ US6838272085

SecurityOCC / Optical Cable Corporation
InstitutionRBF Capital, LLC
Latest Disclosed Ownership19,999 shares
Latest Disclosed Value $ 164,992
RBF Capital, LLC ownership in OCC / Optical Cable Corporation

On May 18, 2026 - RBF Capital, LLC filed a 13F-HR/A form disclosing ownership of 19,999 shares of Optical Cable Corporation (US:OCC) valued at $164,992 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 17, 2026 disclosing 19,999 shares of Optical Cable Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $280,386 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-18 2026-03-31 13F/A-1 OPTICAL CABLE COM NEW 683827208 19,999 0 0.00 165 86.36 0.0081
2026-05-14 2026-03-31 13F OPTICAL CABLE COM NEW 683827208 19,999 0 165 0.0086
2026-02-17 2025-12-31 13F/A-1 OPTICAL CABLE COM NEW 683827208 19,999 -12,496 -38.46 89 -66.54 0.0040
2026-02-17 2025-12-31 13F OPTICAL CABLE COM NEW 683827208 19,999 -12,496 89 0.0040
2025-11-14 2025-09-30 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 264 179.79 0.0118
2025-08-14 2025-06-30 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 94 4.44 0.0045
2025-05-15 2025-03-31 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 91 -23.08 0.0054
2025-02-14 2024-12-31 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 117 34.48 0.0061
2024-11-14 2024-09-30 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 87 -1.14 0.0044
2024-08-14 2024-06-30 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 88 -3.30 0.0051
2024-05-15 2024-03-31 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 92 4.60 0.0051
2024-02-14 2023-12-31 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 88 -10.31 0.0053
2023-11-14 2023-09-30 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 97 -25.95 0.0064
2023-08-14 2023-06-30 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 131 -5.76 0.0082
2023-05-16 2023-03-31 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 140 -3.47 0.0101
2023-02-14 2022-12-31 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 144 28.57 0.0108
2022-11-14 2022-09-30 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 112 -4.27 0.0094
2022-08-15 2022-06-30 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 117 -18.75 0.0081
2022-05-16 2022-03-31 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 144 -17.24 0.0092
2022-02-14 2021-12-31 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 174 42.62 0.0107
2021-11-15 2021-09-30 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 122 4.27 0.0068
2021-08-16 2021-06-30 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 117 0.00 0.0065
2021-05-17 2021-03-31 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 117 34.48 0.0073
2021-03-02 2020-12-31 13F/A-1 OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 87 -13.00 0.0067
2020-11-16 2020-09-30 13F/A-1 OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 100 23.46 0.0101
2020-08-14 2020-06-30 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 81 3.85 0.0087
2020-05-18 2020-03-31 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 78 -26.42 0.0102
2020-02-13 2019-12-31 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 106 -7.83 0.0101
2019-11-13 2019-09-30 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 115 -14.18 0.0129
2019-08-13 2019-06-30 13F OPTICAL CABLE COM NEW 683827208 32,495 0 0.00 134 -11.84 0.0135
2019-05-15 2019-03-31 13F OPTICAL CABLE COM NEW 683827208 32,495 -1 -0.00 152 22.58 0.0178
2019-02-14 2018-12-31 13F OPTICAL CABLE COM NEW 683827208 32,496 0 0.00 124 -37.37 0.0162
2018-11-14 2018-09-30 13F OPTICAL CABLE COM NEW 683827208 32,496 0 0.00 198 54.69 0.0215
2018-08-14 2018-06-30 13F OPTICAL CABLE COM NEW 683827208 32,496 0 0.00 128 31.96 0.0150
2018-05-15 2018-03-31 13F OPTICAL CABLE COM NEW 683827208 32,496 0 0.00 97 24.36 0.0116
2018-02-14 2017-12-31 13F OPTICAL CABLE COM NEW 683827208 32,496 0 0.00 78 11.43 0.0086
2017-11-14 2017-09-30 13F OPTICAL CABLE COM NEW 683827208 32,496 0 0.00 70 -10.26 0.0089
2017-08-14 2017-06-30 13F OPTICAL CABLE COM NEW 683827208 32,496 0 0.00 78 -22.77 0.0102
2017-05-15 2017-03-31 13F OPTICAL CABLE COM NEW 683827208 32,496 0 0.00 101 3.06 0.0138
2017-02-14 2016-12-31 13F OPTICAL CABLE COM NEW 683827208 32,496 0 0.00 98 20.99 0.0140
2016-11-14 2016-09-30 13F OPTICAL CABLE COM NEW 683827208 32,496 0 0.00 81 8.00 0.0139
2016-08-15 2016-06-30 13F OPTICAL CABLE COM NEW 683827208 32,496 0 0.00 75 -3.85 0.0149
2016-05-16 2016-03-31 13F OPTICAL CABLE CORP CMN Common Stock 683827208 32,496 0 0.00 78 -15.22 0.0149
2016-02-16 2015-12-31 13F OPTICAL CABLE CORP CMN Common Stock 683827208 32,496 0 0.00 92 -13.21 0.0173
2015-11-16 2015-09-30 13F OPTICAL CABLE CORP CMN Common Stock 683827208 32,496 0 0.00 106 -5.36 0.0221
2015-08-14 2015-06-30 13F OPTICAL CABLE CORP CMN Common Stock 683827208 32,496 0 0.00 112 -11.11 0.0212
2015-05-14 2015-03-31 13F OPTICAL CABLE CORP CMN Common Stock 683827208 32,496 0 0.00 126 -14.29 0.0256
2015-02-13 2014-12-31 13F OPTICAL CABLE CORP CMN Common Stock 683827208 32,496 0 0.00 147 0.00 0.0304
2014-11-14 2014-09-30 13F OPTICAL CABLE CORP CMN Common Stock 683827208 32,496 0 0.00 147 13.08 0.0337
2014-08-14 2014-06-30 13F OPTICAL CABLE CORP CMN Common Stock 683827208 32,496 0 0.00 130 4.00 0.0313
2014-05-13 2014-03-31 13F OPTICAL CABLE CORP CMN Common Stock 683827208 32,496 0 0.00 125 5.04 0.0305
2014-02-14 2013-12-31 13F OPTICAL CABLE CORP CMN Common Stock 683827208 32,496 1 0.00 119 -9.85 0.0281
2013-11-14 2013-09-30 13F OPTICAL CABLE CORP CMN Common Stock 683827208 32,495 -1 -0.00 132 -8.33 0.0351
2013-08-14 2013-06-30 13F OPTICAL CABLE CORP CMN Common Stock 683827208 32,496 32,496 144 0.0409
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.