Broker tips: TSB, CSR, Afren

Would-be TSB investors should "keep their powder dry", according to Investec, which rated the Lloyds Banking Group offshoot as a 'hold' with a 290p target price after the stock's recent run.Analyst Ian Gordon said that TSB has enjoyed a "fantastic market debut" since floating on the market in June at 260p, materially outperforming all other UK banking stocks. However, the near-term outlook appears "much more challenging".CSR's share price edged higher on Monday as the stock extended gains made last week after the wireless technology firm received an approach from US outfit Microchip.While the approach was rejected by the board of the FTSE 250 firm, analyst Nick James from Numis Securities sees further upside to CSR's shares and lifted his target from 840p to 915p. He said that "multiple" cash-rich semiconductor companies could be interested.Oriel Securities has kept a 'buy' rating for scandal-hit oil explorer Afren but has cautioned that the market may not regain confidence in the stock until the findings of an investigation are known.Oriel analysts Dragan Trajkov and Robin Haworth said: "Following [the] half-year results and management presentation, we maintain our investment thesis and valuation on Afren. We acknowledge, however, that the market will likely wait for the results from the ongoing investigation (expected by the end of September) before it makes its decision."BC