Option traders appear to be setting up for a bullish move on Cogent Inc. (COGT). Traders plowed into 1,571 new call option contracts -- 3.27 times the average volume -- on the stock on Friday. And we know that traders were eager to get into this trade because 99% of the trades came in on the ask price.

Recently, 3M Company (MMM) announced that it was going to acquire Cogent for $10.50 per share. The stock closed Friday at $11.01, up 19.53% during the past month.

Personal income and spending failed to enthuse an already-cautious market. Friday's strong day turned out to be just a head-fake as the return of caution came all over again. Bond prices rose and stocks fell along with oil. Gold was directionless.

Here were today's unofficial closing bell levels:

Dow Jones 10,009.73 -140.92 (-1.39%)
S&P 500 1,048.92 -15.67 (-1.47%)
Nasdaq 2,119.97 -33.66 (-1.56%)

Last December, over 100 stocks were featured in our Top Picks for 2007 report. Now, at mid-year, we turn to the 20 advisors whose picks showed the strongest gains to get an update on their previous picks, as well as a new favorite stock for the second half of the year.

Mark Mowrey, editor of the Prudent Speculator TechValue Report, chose Cogent Inc. (NASDAQ: COGT), which rose 41% as of June 1, 2007. Although he maintains a $24 price target for those who own the stock, he no longer is recommending purchase.

For his new top idea, Mark looks at United Online Inc. (NASDAQ: UNTD). The advisor explains, "For as many reasons to be wary of the company, we find more to like about this net-centric company.

"Founded as Juno Online Services in May 1995, and formed via the merger of that company with fellow dial-up Internet services provider NetZero in June 2001, United Online is one of a select few surviving early Net access players.

"As UNTD milks the dial-up business for cash flow, management hopes to transition as many of those paying customers as they can to a new broadband offering. Still, revenue from the communications segment is declining at a rapid clip, falling 13 percent in 2006 to $375.9 million.

"So what is there to like about a company with declining revenue in its core business, the only savior for which is entry into an even more competitive space? The general answer is the provision of services folks utilize once they're already on the Net.

MOST NOTABLE: Cabela's Inc (CAB), Time Warner Inc (TWX), Open Text Corp (OTEX) and Tortoise Capital Resources Corp (TTO) were some of today's more notable initiations:

• Cabela's inc (NYSE: CAB) was initiated with an Outperform rating and $30 target. The firm is confident in Cabela's outlook given the company's substantial store expansion opportunities, encouraging operating environment and valuation.

• Time Warner (NYSE: TWX) was started with a Buy rating and $25 target at UBS.

• Benchmark initiated Open Text Corp (NASDAQ: OTEX) with a Sell rating.

• Tortoise Capital Resources (NYSE: TTO )was initiated by both Ferris Baker and Stifel with a Buy rating.

OTHER INITIATIONS:

• CIBC initiated Volterra Semiconductor Corp (NASDAQ: VLTR) with a Sector Performer rating.

• Goldman initiated Savvis, Inc (NASDAQ: SVVS) with a Buy rating and $50 target.

• Cowen started Cogent Communications Group, Inc (NASDAQ: CCOI) with an Outperform rating.

• Avondale initiated Callaway Golf Co (NYSE: ELY) with a Market Outperform rating and $20 target.

• ThinkEquity started Adventrx Pharmaceuticals, Inc (NYSE: ANX) with a Buy rating and $5 target.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

Each year Steven Halpern, editor of TheStockAdvisors.com, surveys the leading financial newsletter advisors asking for their favorite stocks for the coming year. This article is part of his 24th annual Top Picks Report.

Cogent Inc. (NASDAQ: COGT) is a top speculative idea from Mark Mowrey, editor of the Prudent Speculator TechValue Report. He explains, "Cogent's identification technology emphasizes the uniqueness of the human fingerprint as the best method for identifying its owner.

"Other potentially more reliable technologies exist, such as retinal, facial, voice, and vascular identification, but none has proved as long-term successful in the field as fingerprint matching. Applications include the obvious, like law enforcement and access restriction, and the not so obvious, such as laptop security and fingerprint-based payment systems.

"Revenue peaked in 2005, the bulk coming from two primary customers: the U.S. Department of Homeland Security and the National Electoral Council of Venezuela. Work continues with both agencies, but orders have become less predictable.