Broadcom's stock has had the worst day in its history as investors digest the supply of CAs

The stock of Broadcom Inc. was about to experience its worst performance on Thursday as investors recorded their first reactions to the company's offer to buy Computer management software CA Inc. and other analysts viewed the transaction as negative. that's a positive.

Broadcom

AVGO, -14.81%

shares fell 15% to $ 207.43, after an intraday low of $ 197.46, putting the stock on track for its worst decline One day. Until now, the worst day of the action was October 10, 2014, by which time the shares had finished down 11.5%. More than 30 million shares were traded on the Midday Exchange, compared with an average of 52 million a day for 3.3 million shares.

On Wednesday late, Broadcom said it was offering $ 18.9 billion for CA, confirming previous reports. This offering is Broadcom's first major acquisition since the acquisition of Qualcomm Inc. by the chip maker.

QCOM, + 1.43%

earlier in the year. Ironically, about $ 16 billion was razed off Broadcom's market capitalization on Thursday in a few hours of trading.

Read: The Broadcom Agreement to Buy CA Makes Little Sense on the Surface

Following the announcement, seven analysts reduced their price targets on Broadcom, with three of those same analysts downgrading the stock to a quote from the FactSet data. In contrast, two analysts have raised their price targets, and one of them has improved the stock to buy. In total, 38 analysts who cover Broadcom, 33 have overweight or buy odds and five have stock quotes with an average price target of $ 305.57.

Moreover, CA's actions

CA, + 18.09%

climbed 18% to $ 43.93, after peaking at $ 44, which allowed them to achieve their best gain in a day in more than 10 years. 20% on February 1, 2008, according to FactSet. Thursday's gain adds about $ 2.8 billion to CA's market capitalization.

Three analysts raised their price targets on CA after announcing an average price target of $ 38.60. Of the 15 analysts who cover CA, two have buy odds, 12 have spare odds, and one has a odds, according to FactSet.

Broadcom shares are down 19% for the year, while CA shares are up 32%. In comparison, the S & P 500 index

SPX, + 0.83%

is up 4.6%, the Nasdaq composite index

COMP, + 1.22%

is up 13%, and the PHLX Semiconductor Index

SOX, + 0.58%

is up 7.2%.