Stock Quotes in this Article: AGO, APO, COR

MADISON, Wis. (Stockpickr) -- Professional traders running mutual funds and hedge funds don't just look at a stock's price moves; they also track big changes in volume activity. Often when above-average volume moves into an equity, it precedes a large spike in volatility.

Major moves in volume can signal unusual activity, such as insider buying or selling -- or buying or selling by "superinvestors."

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Unusual volume can also be a major signal that hedge funds and momentum traders are piling into a stock ahead of a catalyst. These types of traders like to get in well before a large spike, so it's always a smart move to monitor unusual volume. That said, remember to combine trend and price action with unusual volume. Put them all together to help you decipher the next big trend for any stock.

With that in mind, let's take a look at several stocks rising on unusual volume today.

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Apollo Global Management

Apollo Global Management (APO) is a global alternative asset manager. This stock is trading up 2% at $27.14 in recent trading.

Today's Volume: 1.01 million

Average Volume: 839,768

Volume % Change: 149%

Shares of APO are trending higher today after the company reported a 72% increase in first-quarter profit, its best quarterly results as a publically traded alternative asset manager.

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From a technical perspective, APO is gapping higher here right above some near-term support levels at $26 to $25.65 with above-average volume. This move has started to push shares of APO into breakout territory, since the stock is flirting with some near-term overhead resistance levels at $27.38 to $27.56. At last check, APO has hit an intraday high of $28.14 and volume is well above its three-month average action of 839,768 shares.

Traders should now look for long-biased trades in APO as long as it's trending above today's low of $26.85 and then once it sustains a move or close above those breakout levels and above today's high of $28.14 with volume that hits near or above 839,768 shares. If APO maintains this move, then this stock will set up to enter new all-time high territory above $28.14, which is bullish technical price action. Some possible upside targets off that move are $30 to $33.

CoreSite Realty

CoreSite Realty (COR) is a fully integrated, self-administered and self-managed real estate investment trust. This stock is trading up 4.9% to $38.10 in recent trading.

Today's Volume: 382,000

Average Volume: 204,656

Volume % Change: 191%

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From a technical perspective, COR is gapping up sharply higher here right above its 50-day moving average of $34.85 with above-average volume. This move has started to push shares of COR into breakout and new 52-week-high territory, since the stock has started to flirt with some near-term overhead resistance at $38.23. At last check, COR has hit an intraday high of $38.57, and volume is well above its three-month average action of 204,656 shares.

Traders should now look for long-biased trades in COR as long as it's trending above today's low of $37.80 and then once it sustains a move or close above $38.23 to $38.57 with volume that hits near or above 204,656 shares. If that breakout triggers soon, then COR will set up to enter new 52-week-high territory above $38.57, which is bullish technical price action. Some possible upside targets off that breakout are $40 to $43.

Assured Guaranty

Assured Guaranty (AGO) provides credit enhancement products to the public finance, structured finance and mortgage markets. This stock is trading up 5.6% to $22 in recent trading.

Today's Volume: 3.61 million

Average Volume: 2.06 million

Volume % Change: 158%

Shares of AGO are trending higher here after the company said it will be paid $358 million by UBS AG to settle a lawsuit that accused the bank of falsely representing the quality of the loans underlying $1.49 million of mortgage-backed securities.

From a technical perspective, shares of AGO are breaking out here above some near-term overhead resistance levels at $20.79 to $21.30 with heavy upside volume. This move has pushed shares of AGO into new 52-week-high territory, which is bullish technical price action.

Traders should now look for long-biased trades in AGO as long as it's trending above those near-term breakout levels or above today's low of $21.21, and then once it sustains a move or close above its 52-week high at $22.46 with volume that hits near or above 2.06 million shares. If AGO can sustain this move, then this stock will set up to re-test or possibly take out its next major overhead resistance levels at $25 to $27.

To see more stocks rising on unusual volume, check out the Stocks Rising on Unusual Volume portfolio on Stockpickr.

-- Written by Roberto Pedone in Madison, Wis.

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At the time of publication, author had no positions in stocks mentioned.

Roberto Pedone, based out of Madison, Wis., is an independent trader who focuses on technical analysis for small- and large-cap stocks, options, futures, commodities and currencies. Roberto studied international business at the Milwaukee School of Engineering, and he spent a year overseas studying business in Lubeck, Germany. His work has appeared on financial outlets including CNBC.com and Forbes.com. You can follow Pedone on Twitter at www.twitter.com/zerosum24 or @zerosum24.