Stock data
大洋 (1321)
大洋 is a TWSE-listed company in Plastics. Revenue for September 2026 was NT$331.35M, up 33.8% from a year earlier. EPS over the last four quarters totals NT$0.12.
Company profile
Data as of 2026-10-18
- Market
- TWSE-listed
- Industry
- Plastics
- Listed
- 1999-01-26
- Founded
- 1965-06-07
- Paid-in capital
- NT$2.27B
- Common shares issued
- 227,228,268
- Legal name
- 大洋塑膠工業股份有限公司
- Website
- https://www.opc.com.tw
Monthly revenue
Data as of 2026-10-17
| Month | Revenue | MoM | YoY |
|---|---|---|---|
| 2026-09 | NT$331.35M | +22.2% | +33.8% |
| 2026-08 | NT$271.11M | -8.8% | +5.6% |
Year to date: +2.4% vs. last year (Jan–Sep 2026)
Earnings per share (EPS)
Data as of 2026-06-30
| Quarter | EPS (NT$) |
|---|---|
| 2026 Q2 | 0.61 |
| 2026 Q1 | 0.16 |
| 2025 Q4 | -0.51 |
| 2025 Q3 | -0.14 |
| 2025 Q2 | -0.39 |
| 2025 Q1 | -0.21 |
| 2024 Q4 | 0.02 |
| 2024 Q3 | -0.11 |
Last four quarters: NT$0.12
Dividends
Data as of 2026-10-18
| Period | Cash (NT$) | Stock (NT$) | Ex-dividend | Ex-rights | Paid |
|---|---|---|---|---|---|
| 2025 年度 | 0.00 | 0.00 | — | — | — |
Shareholder structure
Data as of 2026-10-16
| Holding range | Holders | Share of total |
|---|---|---|
| 1–999 shares | 1,242 | 0.0% |
| 1,000–5,000 shares | 1,450 | 1.4% |
| 5,001–10,000 shares | 323 | 1.2% |
| 10,001–15,000 shares | 163 | 0.9% |
| 15,001–20,000 shares | 112 | 0.9% |
| 20,001–30,000 shares | 113 | 1.3% |
| 30,001–40,000 shares | 69 | 1.1% |
| 40,001–50,000 shares | 49 | 1.0% |
| 50,001–100,000 shares | 119 | 3.9% |
| 100,001–200,000 shares | 129 | 8.2% |
| 200,001–400,000 shares | 79 | 9.6% |
| 400,001–600,000 shares | 29 | 6.5% |
| 600,001–800,000 shares | 15 | 4.6% |
| 800,001–1,000,000 shares | 14 | 5.7% |
| 1,000,001+ shares | 34 | 53.6% |
TDCC data for 2026-10-16: 34 holders own more than 1,000 lots (53.6% of shares), and 1,242 hold less than one lot (0.0%).
Institutional net buying (last 20 trading days)
Data as of 2026-10-19
| Date | Foreign | Trust | Dealers | Total |
|---|---|---|---|---|
| 2026-10-19 | -3 | 0 | -2 | -5 |
| 2026-10-16 | -72 | 0 | 22 | -50 |
| 2026-10-15 | 102 | 0 | -13 | 89 |
| 2026-10-14 | 218 | 0 | 0 | 218 |
| 2026-10-13 | 72 | 0 | -2 | 70 |
| 2026-10-12 | 44 | 0 | 0 | 44 |
| 2026-10-08 | 36 | 0 | 14 | 50 |
| 2026-10-07 | 8 | 0 | 3 | 11 |
| 2026-10-06 | 30 | 0 | 0 | 30 |
| 2026-10-05 | 15 | 0 | 0 | 15 |
| 2026-10-02 | -10 | 0 | 0 | -10 |
| 2026-10-01 | 8 | 0 | 6 | 14 |
| 2026-09-30 | 14 | 0 | 1 | 15 |
| 2026-09-29 | -25 | 0 | 2 | -23 |
| 2026-09-24 | -31 | 0 | 0 | -31 |
| 2026-09-23 | 0 | 0 | 0 | 0 |
| 2026-09-22 | -30 | 0 | 0 | -30 |
| 2026-09-21 | -17 | 0 | 3 | -14 |
| 2026-09-18 | 4 | 0 | 10 | 14 |
| 2026-09-17 | 71 | 0 | 1 | 72 |
Unit: lots (1,000 shares). Over the last 20 trading days, institutions were net buyers of 479 lots.
Price (official close)
Data as of 2026-10-19
Last close NT$35.85 (2026-10-19); 52-week range NT$28.05–36.75.
Sources
- Source: Taiwan Stock Exchange and Taipei Exchange public data
- Source: Taiwan Stock Exchange and Taipei Exchange public data
- Source: Market Observation Post System (MOPS)
- Source: Taiwan Stock Exchange and Taipei Exchange public data
- Source: Taiwan Depository & Clearing Corporation public data
- Source: Taiwan Stock Exchange and Taipei Exchange public data
- Source: Taiwan Stock Exchange and Taipei Exchange public data
Charts, drawing tools, and the P/E calculator are in the app, free to use.