ProtoSource Corporation (PSCO)
OTCMKTS · Delayed Price · Currency is USD
0.0096
+0.0004 (4.35%)
At close: Sep 25, 2026
ProtoSource Market Cap
ProtoSource has a market cap or net worth of $4.89 million as of October 20, 2026. It is the 45,056th most valuable company in the world and the 6,026th biggest in the United States. Its market cap has decreased by 89.89% in one year.
Market Cap
4.89M
Enterprise Value
n/a
Revenue
3.10M
Global Rank
Country Rank
#6,026 United States
PE Ratio
n/a
ChartMarket Cap Chart
Since February 10, 1995, ProtoSource's market cap has decreased from 5.65M to 4.89M, a decrease of -13.41%. That is a compound annual growth rate of -0.45%.
| Date | Market Cap | % Change |
|---|---|---|
| Sep 15, 2026 | 14.73M | 180.58% |
| Dec 31, 2025 | 5.25M | -73.59% |
| Dec 19, 2023 | 19.88M | 254.55% |
| Dec 30, 2022 | 5.61M | -63.81% |
| Dec 30, 2021 | 15.50M | 93.75% |
| Dec 30, 2020 | Upgrade Pro | Upgrade Pro |
| Dec 26, 2019 | Upgrade Pro | Upgrade Pro |
| Dec 21, 2018 | Upgrade Pro | Upgrade Pro |
| Dec 30, 2016 | Upgrade Pro | Upgrade Pro |
Market Capitalization
Market capitalization, also called net worth, is the total value of all of a company's outstanding shares. It is calculated by multiplying the stock price by the number of shares outstanding.
Formula: Market Cap = Stock Price * Shares Outstanding
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