Japan's SMFG Bids \$29 Billion for UFJ  TOKYO (Reuters) - Sumitomo Mitsui Financial Group Inc.  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=8316.T target=/stocks/quickinfo/fullquote"&gt;8316.T&lt;/A&gt; laid out a \$29 billion bid for UFJ Holdings &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=8307.T target=/stocks/quickinfo/fullquote"&gt;8307.T&lt;/A&gt;  on Tuesday, challenging a rival offer by Mitsubishi Tokyo  Financial Group &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=8306.T target=/stocks/quickinfo/fullquote"&gt;8306.T&lt;/A&gt; to form the world's biggest bank.