DELAFIELD, Wis. (Stockpickr) -- While the U.S. stock market continues to be dominated by large swings in volatility, I continue on my search for hidden gems by tracking big insider buying. Insiders don't generally care what the overall market is doing and how volatile it is. They are more concerned with what's going on at the companies they run.

Corporate insiders sell their own companies' stock for a number of reasons. They might need the cash for a big personal purchase such as a new house or yacht, or they might need the cash to fund a charity. Sometimes they sell as part of a planned selling program that they have put in place for diversification purposes, which allows them to sell stock in stages instead of selling all at one price.

Other times they sell because they think their stock is overvalued and the risk/reward is no longer attractive. Some even dump their own stock because they have inside knowledge that a competitor is eating their lunch and stealing market share.

But insiders usually buy their own shares for one reason: They think the stock is a bargain and has tremendous upside.

The key word in that last statement is "think." Just because a corporate insider thinks his or her stock is going to trade higher, that doesn't mean it will play out that way. Insiders can have all the conviction in the world that their stock is a buy, but if the market doesn't agree with them, the stock could end up going nowhere. Also, I say "usually" because sometimes insiders are loaned money by the company to buy their own stock. Those loans are often sweetheart deals and shouldn't be viewed as organic insider buying.

At the end of the day, it's institutional money managers running big mutual funds and hedge funds that drive stock prices, not insiders. That said, many of these savvy stock operators will follow insider buying activity when they agree with the insider that the stock is undervalued and has upside potential. This is why it's so important to always be monitoring insider activity but twice as important to make sure the trend of the stock coincides with the insider buying.

Recently, a number of companies' corporate insiders have bought large amounts of stock. These insiders are finding some value in the market, which warrants a closer look at these stocks.

Jamba

One stock that insiders are jumping into here is Jamba (JMBA) - Get Report, which owns, operates and franchises Jamba Juice stores in the U.S. and internationally. Insiders are buying this stock into modest strength, since shares have trended higher by 5.6% over the last three months.

Jamba has a market cap of $267 million. This stock trades at a reasonable valuation, with a forward price-to-earnings of 26.4. Its estimated growth rate for this year is 105%, and for next year it's pegged at 41.5%. This is a cash-rich company, since the total cash position on its balance sheet is $30.43 million and its total debt is zero.

A director just bought 150,000 shares, or about $2.10 million worth of stock, at $13.95 to $13.96 per share.

From a technical perspective, JMBA is currently trending above its 200-day moving average and right at its 50-day moving average, which is neutral trendwise. This stock has been uptrending for the last few weeks, with shares moving higher from its low of $13.70 to its intraday high of $15.42 a share. During that uptrend, shares of JMBA have been consistently making higher lows and higher highs, which is bullish technical price action. That move has now pushed shares of JMBA within range of triggering a near-term breakout trade above some key overhead resistance levels.

If you're bullish on JMBA, then I would look for long-biased trades as long as this stock is trending above some near-term support at $15 or just below $14.50 and then once it breaks out above some key near-term overhead resistance at $15.42 with high volume. Look for a sustained move or close above that level with volume that hits near or above its three-month average volume of 265,368 shares. If that breakout hits soon, then JMBA will set up to re-test or possibly take out its 52-week high of $16.89 a share.

Durect

A specialty pharmaceutical stock that insiders are active in here is Durect(DRRX) - Get Report, which is engaged in the development of pharmaceutical products based on its proprietary drug delivery technology platforms in the U.S. and internationally. Insiders are buying this stock into monster strength, since shares have exploded higher by 106% over the last three months.

Durect has a market cap of $189 million and an enterprise value of $180 million. This stock trades at a premium valuation, with price-to-sales of 9.97 and a price-to-book of 10.43. Its estimated growth rate for this year is -20%, and for next year it's pegged at -4.2%. This is a cash-rich company, since the total cash position on its balance sheet is $32.70 million and its total debt is $19.82 million.

A beneficial owner just bought 1,668,800 shares, or above $2.83 million worth of stock, at $1.66 per share.

From a technical perspective, DRRX is currently trending above both its 50-day and 200-day moving averages, which is bullish. This stock has been consolidating and trending sideways for the last month or so, with shares moving between $1.56 on the downside and $1.83 on the upside. Shares of DRRX are currently trending within range of triggering a big breakout trade above the upper-end of its recent sideways trading chart pattern.

If you're in the bull camp on DRRX, then I would look for long-biased trades as long as this stock is trending above some key near-term support at $1.56 a share and then once it breaks out above some near-term overhead resistance levels at $1.83 to $1.85 a share and then above its 52-week high of $1.89 a share with high volume. Look for a sustained move or close above those levels with volume that registers near or above its three-month average action of 416,123 shares. If that breakout develops soon, then DRRX will set up to re-test or possibly take out its next major overhead resistance levels at $2.20 to $2.69 a share.

Patriot National

One financial stock that insiders are in love with here is Patriot National (PN) , which provides various outsourcing solutions within the workers compensation marketplace for insurance companies, employers, local governments and reinsurance captives. Insiders are buying this stock into modest strength, since shares have trended higher by 5.1% over the last three months.

Patriot National has a market cap of $256 million and an enterprise value of $355 million. This stock trades at a reasonable valuation, with a trailing price-to-earnings of 22.8 and a forward price-to-earnings of 12. Its estimated growth rate for this year is 288.9%, and for next year it's pegged at 68.6%. This is not a cash-rich company, since the total cash position on its balance sheet is $4.25 million and its total debt is $40 million.

A director just bought 110,093 shares, or about $1.44 million worth of stock, at $12.71 to $13.54 per share.

From a technical perspective, this stock has been uptrending very strong over the last few weeks, with shares ripping sharply higher from its low of $11.02 to its intraday high on Tuesday of $14.19 a share. during that uptrend, shares of PN have been consistently making higher lows and higher highs, which is bullish technical price action. That move has now pushed shares of PN within range of triggering a major breakout trade above some key near-term overhead resistance levels.

If you're bullish on PN, then I would look for long-biased trades as long as this stock is trending above some key near-term support levels at $13.50 or at $13 a share and then once it breaks out above its all-time high of $14.37 a share with high volume. Look for a sustained move or close above that level with volume that hits near or above its three-month average action of 209,269 shares. If that breakout materializes soon, then PN will set up to enter new all-time-high territory, which is bullish technical price action. Some possible upside targets off that move are $16 to $17, or even $18 a share.

SS&C Technologies

One technology stock that insiders are loading up on here is SS&C Technologies(SSNC) - Get Report, which provides software products and software-enabled services to financial services providers in North America, Europe, Asia, Australia and Africa. Insiders are buying this stock into major strength, since shares have ripped to the upside by 40.5% over the last six months.

SS&C Technologies has a market cap of $5.2 billion and an enterprise value of $5.7 billion. This stock trades at a fair valuation, with a trailing price-to-earnings of 41.5 and a forward price-to-earnings of 21.6. Its estimated growth rate for this year is 11.4%, and for next year it's pegged at 9.5%. This is not a cash-rich company, since the total cash position on its balance sheet is $109.58 million and its total debt is $638.91 million.

A director just bought 7.500 shares, or about $459,000 worth of stock, at $61.21 per share.

From a technical perspective, SSNC is currently trending above both its 50-day and 200-day moving averages, which is bullish. This stock has been consolidating and trending sideways for the last two months, with shares moving between $60.33 on the downside and $64.86 on the upside. Shares of SSNC are now trending within range of triggering a big breakout trade above the upper-end of its recent sideways trading chart pattern.

If you're bullish on SSNC, then I would look for long-biased trades as long as this stock is trending above some key near-term support levels at $60.33 or above its 50-day moving average of $59.74 a share and then once it breaks out above some near-term overhead resistance levels at $63.66 to $63.79 a share and then above its 52-week high of $64.99 a share with high volume. Look for a sustained move or close above those levels with volume that hits near or above its three-month average action of 326,595 shares. If that breakout gets set off soon, then SSNC will set up to enter new 52-week-high territory above $64.99 a share, which is bullish technical price action. Some possible upside targets off that move are $70 to $75 a share, or even $80 a share.

Enterprise Products Partners

One final stock with some monster insider buying is Enterprise Products Partners(EPD) - Get Report, which provides midstream energy services to producers and consumers of natural gas, natural gas liquids, crude oil, petrochemicals and refined products in the U.S. and internationally. Insiders are buying this stock into notable weakness, since shares have fallen by 18.7% over the last six months.

Enterprise Products Partners has a market cap of $62.3 billion and an enterprise value of $85 billion. This stock trades at a fair valuation, with a trailing price-to-earnings of 21.9 and a forward price-to-earnings of 21.3. Its estimated growth rate for this year is -6.2%, and for next year it's pegged at 10.2%. This is not a cash-rich company, since the total cash position on its balance sheet is $74.40 million and its total debt is a whopping $21.36 billion. This stock currently sports a dividend yield of 4.6%.

A director just bought 3,225,057 shares, or about $100 million worth of stock, at $31.01 per share. From a technical perspective, EPD is currently trending below both its 50-day and 200-day moving averages, which is bearish. This stock recently formed a double bottom chart pattern at $30.70 to $30.71 a share. Following that bottom, shares of EPD have started to uptrend with the stock moving higher from its low of $30.71 to its recent high of $33.09 a share. During that move, shares of EPD have been making mostly higher lows and higher highs, which is bullish technical price action. That move has now pushed shares of EPD within range of triggering a major breakout trade above a key downtrend line.

If you're bullish on EPD, then I would look for long-biased trades as long as this stock is trending above some key near-term support levels at $32 or at $31 a share and then once it breaks out above some near-term overhead resistance levels at $33.09 to its 50-day moving average of $33.38 a share and then above $34 to $35 a share with high volume. Look for a sustained move or close above the levels with volume that hits near or above its three-month average volume of 3.20 million shares. If that breakout begins soon, then EPD will set up to re-test or possibly take out its next major overhead resistance levels at $36 to its 200-day at $36.25, or $37 to $38 a share.

This article is commentary by an independent contributor. At the time of publication, the author held no positions in the stocks mentioned.