(Updated with additional information)

NEW YORK ( TheStreet) -- A wealth of healthy buying in recent weeks led a wide variety of blue chips to hit fresh 52-week highs this week.

Jim Cramer told the viewers of his "Mad Money" TV show Wednesday the 52-week high list tells us everything we need to know about the market, though it's not the number of companies hitting 52-week highs that's important, it's the number of industries represented on the list.

>>Cramer's 'Mad Money' Recap: 52-Week High Breakout

He explained that just a month ago, there were only three industries on the list, and they represented people's fears of the market. But today, there's an astounding 25 different industries on the list, a diverse swath of the economy.

Ranked by volume, the most heavily-traded stock to hit a fresh 52-week high Thursday was Dow Jones Industrial Average component DuPont ( DD - Get Report). The chemical maker saw its shares rise to $43.46 before closing at $43.38.

Shares of insurance firm Ace Limited ( ACE) rose as high as $57.90 before closing at $57.79.

Chubb ( CB) shares reached a peak of $57.60 and closed at $57.56.

Elsewhere in 52-week highs, Fomento Economico Mexicano ( FMX), a Mexican holding company, saw its American depositary receipts rise to a fresh 52-week high of $52.46 on Thursday, before settling at $52.40.

Brewer Anheuser-Busch Inbev's ( BUD) ADRs reached a price of $56.52, before closing at $56.31.

Agrium ( AGU) shares reached $74.95, Digital television broadcaster DirecTV ( DTV) tapped a fresh 52-week high of $41.31, and Burger King Holdings ( BKC) gained to $23.84.

>> Bankruptcy Watch: 20 Riskiest Restaurant Stocks

Agriculture stocks like Deere ( DE), food companies like Kraft ( KFT) and tech firms like NetApp ( NTAP - Get Report) all made the list this week as well. Names from apparel, railroads, beer, machinery, telco, restaurants, trucks, chemicals, drug companies and even soft-goods maker Clorox ( CLX) also made the list.

>>Which 52-Week-High Stock Will Outperform?

Cramer said with so many sectors rallying, there are lots of opportunities for investors. He said the market can't rally without solid leaders, and the more the merrier. In today's market, we have tons of leaders, he said, and the broadening list is increasingly bullish news.

Berkshire Hathaway ( BRK-B), led by billionaire Warren Buffett, touched a fresh 52-week high of $83.58 on Tuesday.

Philip Morris International ( PM - Get Report) repeatedly topped its annual highs this week, rising to $55.60 on Wednesday.

Another repeater, Vodafone ( VOD), hit a fresh 52-week high of $25.33 on Wednesday.

Other large caps to hit 52-week highs this week were software maker Infosys Technologies ( INFY) at $65.60, and communications firm Qwest Communications ( Q) at $6.08.

-- Written by Miriam Marcus Reimer in New York.

>To contact the writer of this article, click here: Miriam Reimer.

>To follow the writer on Twitter, go to http://twitter.com/miriamsmarket.

>To submit a news tip, send an email to: tips@thestreet.com.


>>See our new stock quote page.

Get more stock ideas and investing advice on our sister site, Stockpickr.com.

Disclosure: TheStreet's editorial policy prohibits staff editors and reporters from holding positions in any individual stocks.