Rubicon Technology changes its fiscal year end: what it means for RBCN stock
Published on 10/01/2026 at 18:02 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS
Rubicon Technology (ISIN US78112T2069) changed its fiscal year end from December 31 to September 30, a move approved by its board on September 20, 2026. According to OTC Markets, the company will use the new calendar for its current fiscal period and future annual reporting.
September 30 becomes year end
The fiscal year ending September 30, 2026 covers October 1, 2025 through September 30, 2026. The comparable prior-year period will use the same October 1 through September 30 structure, improving the direct comparison between the two annual reporting periods.
The first full fiscal year under the new calendar began October 1, 2026 and will end September 30, 2027. The company said it will make the necessary filings and notifications through OTC Markets, linking the accounting change to its regulatory reporting schedule.
Revenue comparison shows volatility
Historical growth figures underline why the reporting reset matters for comparisons. Eulerpool lists Rubicon Technology revenue growth at 2,643.48 percent for 2025, versus minus 22.07 percent for 2024. The two figures describe a sharp change in the reported growth rate, although the new September year end will reset the comparison period.
The OTC Markets release describes Rubicon Technology as operating across logistics, life sciences and manufacturing, including cargo transportation, biomedical research products and monocrystalline sapphire materials. That broader description differs from older company profiles centered on sapphire products, making the company scope another factor in interpreting future annual figures.
RBCN market value stays modest
RBCN had a market capitalization of USD 13.8 million as of September 30, 2026. Its 52-week range was USD 2.55 to USD 6.70 on the same date, placing the company in the micro-cap segment and making reporting-period consistency especially important for investors assessing growth.
RBCN at a glance
- Company: Rubicon Technology, Inc.
- ISIN: US78112T2069
- WKN: A2DREW
- Ticker: RBCN
- Primary exchange: OTC Markets OTCID
- Market capitalization: USD 13.8 million (as of September 30, 2026)
- 52-week range: USD 2.55-USD 6.70 (as of September 30, 2026)
- Sector / Industry: Information technology / Semiconductors and Semiconductor Equipment
