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The following is a list of high volume gainers with bullish option market sentiment, i.e. a large number of open call option positions relative to put option positions.

For each stock, we'll list the Relative Volume indicator, which expresses Wednesday's trading volume as a multiple of the 3-month average volume.

Relative Volume data sourced from Finviz, options data sourced from Schaeffer's.

click for expanded image

The list has been sorted by the Put/Call ratio.

1. Newport Corp. (NEWP): Scientific & Technical Instruments Industry. Market cap of $573.67M. Wednesday's Relative Volume at 3.64, with the stock gaining 7.43% during the session. Call open interest at 2,456 contracts vs. put open interest at 95 contracts (Put/Call ratio at 0.04). Short float at 2.76%, which implies a short ratio of 4.08 days. The stock has gained 107.3% over the last year.

2. Alexco Resource Corporation (AXU): Nonmetallic Mineral Mining Industry. Market cap of $415.26M. Wednesday's Relative Volume at 1.81, with the stock gaining 3.92% during the session. Call open interest at 1,083 contracts vs. put open interest at 80 contracts (Put/Call ratio at 0.07). Short float at 0.76%, which implies a short ratio of 0.94 days. The stock has gained 136.62% over the last year.

3. Korea Electric Power Corp. (KEP): Electric Utilities Industry. Market cap of $15.89B. Wednesday's Relative Volume at 2.27, with the stock gaining 3.95% during the session. Call open interest at 7,214 contracts vs. put open interest at 619 contracts (Put/Call ratio at 0.09). Short float at 0.39%, which implies a short ratio of 3.65 days. The stock has lost -11.89% over the last year.

4. Ultratech, Inc. (UTEK): Semiconductor Equipment & Materials Industry. Market cap of $483.27M. Wednesday's Relative Volume at 3.66, with the stock gaining 7.73% during the session. Call open interest at 3,161 contracts vs. put open interest at 284 contracts (Put/Call ratio at 0.09). Short float at 3.11%, which implies a short ratio of 4.48 days. The stock has gained 46.59% over the last year.

5. IPG Photonics Corporation (IPGP): Semiconductor Industry. Market cap of $1.47B. Wednesday's Relative Volume at 1.5, with the stock gaining 9.94% during the session. Call open interest at 691 contracts vs. put open interest at 71 contracts (Put/Call ratio at 0.1). Short float at 3.16%, which implies a short ratio of 3.49 days. The stock has gained 104.21% over the last year.

6. Northern Dynasty Minerals Ltd. (NAK): Gold Industry. Market cap of $901.54M. Wednesday's Relative Volume at 2.28, with the stock gaining 5.84% during the session. Call open interest at 5,484 contracts vs. put open interest at 648 contracts (Put/Call ratio at 0.12). Short float at 0.63%, which implies a short ratio of 1.53 days. The stock has gained 22.76% over the last year.

7. eHealth, Inc. (EHTH): Insurance Brokers Industry. Market cap of $350.98M. Wednesday's Relative Volume at 2.39, with the stock gaining 5.05% during the session. Call open interest at 483 contracts vs. put open interest at 61 contracts (Put/Call ratio at 0.13). Short float at 14%, which implies a short ratio of 19.48 days. The stock has gained 17.9% over the last year.

8. Neurocrine Biosciences Inc. (NBIX): Biotechnology Industry. Market cap of $418.58M. Wednesday's Relative Volume at 1.54, with the stock gaining 4.81% during the session. Call open interest at 4,687 contracts vs. put open interest at 837 contracts (Put/Call ratio at 0.18). Short float at 5.55%, which implies a short ratio of 5.21 days. The stock has gained 237.61% over the last year.

9. ION Geophysical Corporation (IO): Scientific & Technical Instruments Industry. Market cap of $1.17B. Wednesday's Relative Volume at 2.23, with the stock gaining 6.54% during the session. Call open interest at 7,421 contracts vs. put open interest at 1,388 contracts (Put/Call ratio at 0.19). Short float at 7.49%, which implies a short ratio of 5.91 days. The stock has gained 32.99% over the last year.

10. Navistar International Corp. (NAV): Trucks & Other Vehicles Industry. Market cap of $3.91B. Wednesday's Relative Volume at 3.27, with the stock gaining 6.47% during the session. Call open interest at 31,540 contracts vs. put open interest at 5,927 contracts (Put/Call ratio at 0.19). Short float at 8.79%, which implies a short ratio of 4.91 days. The stock has gained 57.21% over the last year.

11. Denison Mines Corp. (DNN): Industrial Metals & Minerals Industry. Market cap of $1.15B. Wednesday's Relative Volume at 3.79, with the stock gaining 9.35% during the session. Call open interest at 3,775 contracts vs. put open interest at 740 contracts (Put/Call ratio at 0.2). Short float at 1.19%, which implies a short ratio of 1.61 days. The stock has gained 142.14% over the last year.

12. Nektar Therapeutics (NKTR): Biotechnology Industry. Market cap of $1.24B. Wednesday's Relative Volume at 2.06, with the stock gaining 4.1% during the session. Call open interest at 3,704 contracts vs. put open interest at 815 contracts (Put/Call ratio at 0.22). Short float at 10.38%, which implies a short ratio of 18.21 days. The stock has gained 41.22% over the last year.

13. ON Semiconductor Corp. (ONNN): Semiconductor Industry. Market cap of $3.76B. Wednesday's Relative Volume at 2.52, with the stock gaining 6.5% during the session. Call open interest at 25,925 contracts vs. put open interest at 6,266 contracts (Put/Call ratio at 0.24). Short float at 3.44%, which implies a short ratio of 2.3 days. The stock has gained 4.57% over the last year.

14. Newcastle Investment Corp. (NCT): REIT. Market cap of $374.6M. Wednesday's Relative Volume at 2.02, with the stock gaining 6.15% during the session. Call open interest at 1,801 contracts vs. put open interest at 443 contracts (Put/Call ratio at 0.25). Short float at 4.4%, which implies a short ratio of 4.71 days. The stock has gained 214.58% over the last year.

15. Winnebago Industries Inc. (WGO): Recreational Vehicles Industry. Market cap of $318.28M. Wednesday's Relative Volume at 2.02, with the stock gaining 4.29% during the session. Call open interest at 3,973 contracts vs. put open interest at 1,024 contracts (Put/Call ratio at 0.26). Short float at 11.77%, which implies a short ratio of 13.17 days. The stock has gained 1.58% over the last year.

16. Ametek Inc. (AME): Industrial Electrical Equipment Industry. Market cap of $6.59B. Wednesday's Relative Volume at 1.79, with the stock gaining 4.44% during the session. Call open interest at 2,574 contracts vs. put open interest at 667 contracts (Put/Call ratio at 0.26). Short float at 1.79%, which implies a short ratio of 3.62 days. The stock has gained 67.8% over the last year.

17. Universal Display Corp. (PANL): Computer Peripherals Industry. Market cap of $1.02B. Wednesday's Relative Volume at 2, with the stock gaining 7.23% during the session. Call open interest at 5,189 contracts vs. put open interest at 1,621 contracts (Put/Call ratio at 0.31). Short float at 15.13%, which implies a short ratio of 16.1 days. The stock has gained 135.79% over the last year.

18. Bottomline Technologies Inc. (EPAY): Business Software & Services Industry. Market cap of $642.77M. Wednesday's Relative Volume at 1.66, with the stock gaining 5.12% during the session. Call open interest at 1,150 contracts vs. put open interest at 366 contracts (Put/Call ratio at 0.32). Short float at 5.43%, which implies a short ratio of 8.79 days. The stock has gained 15.9% over the last year.

19. Western Alliance Bancorporation (WAL): Regional Bank. Market cap of $533.14M. Wednesday's Relative Volume at 1.91, with the stock gaining 6% during the session. Call open interest at 707 contracts vs. put open interest at 246 contracts (Put/Call ratio at 0.35). Short float at 9.78%, which implies a short ratio of 17.54 days. The stock has gained 58.35% over the last year.

20. OmniVision Technologies Inc. (OVTI): Semiconductor Industry. Market cap of $1.67B. Wednesday's Relative Volume at 3.43, with the stock gaining 9.65% during the session. Call open interest at 52,865 contracts vs. put open interest at 20,179 contracts (Put/Call ratio at 0.38). Short float at 10.73%, which implies a short ratio of 3.19 days. The stock has gained 150.16% over the last year.

21. Cheniere Energy, Inc. (LNG): Oil & Gas Drilling & Exploration Industry. Market cap of $342.38M. Wednesday's Relative Volume at 2.07, with the stock gaining 6.64% during the session. Call open interest at 9,350 contracts vs. put open interest at 3,750 contracts (Put/Call ratio at 0.4). Short float at 19.12%, which implies a short ratio of 8.63 days. The stock has gained 219.35% over the last year.

22. Sonic Solutions (SNIC): Business Software & Services Industry. Market cap of $509.09M. Wednesday's Relative Volume at 1.96, with the stock gaining 4.51% during the session. Call open interest at 5,607 contracts vs. put open interest at 2,261 contracts (Put/Call ratio at 0.4). Short float at 28.71%, which implies a short ratio of 14.98 days. The stock has gained 9.44% over the last year.

23. Brooks Automation Inc. (BRKS): Semiconductor Equipment & Materials Industry. Market cap of $493.19M. Wednesday's Relative Volume at 1.92, with the stock gaining 4.14% during the session. Call open interest at 781 contracts vs. put open interest at 321 contracts (Put/Call ratio at 0.41). Short float at 2.75%, which implies a short ratio of 2.54 days. The stock has lost -0.66% over the last year.

24. Magnum Hunter Resources Corp. (MHR): Oil & Gas Drilling & Exploration Industry. Market cap of $440.8M. Wednesday's Relative Volume at 4.63, with the stock gaining 4.56% during the session. Call open interest at 1,808 contracts vs. put open interest at 746 contracts (Put/Call ratio at 0.41). Short float at 6.91%, which implies a short ratio of 5 days. The stock has gained 311.54% over the last year.

25. Ansys, Inc. (ANSS): Technical & System Software Industry. Market cap of $4.62B. Wednesday's Relative Volume at 1.74, with the stock gaining 4.72% during the session. Call open interest at 1,355 contracts vs. put open interest at 574 contracts (Put/Call ratio at 0.42). Short float at 3.02%, which implies a short ratio of 5.02 days. The stock has gained 27.48% over the last year.

Disclosure: No positions

Source: 25 High Volume Gainers With Bullish Options Sentiment