Updated from 6:30 p.m.

On the heels of a

rally in the major indices today, investors -- who stocked up on Rolaids to survive this week's volatility -- stuck it out for a final round of after-hours trading.

For the second night in a row,

Dow Jones Industrial Average component

Honeywell

(HON) - Get Report

was the front-page story.

Earlier today,

United Technologies

, a manufacturer of products including air conditioners, aircraft engines and elevators, announced that it had scrapped merger talks with Honeywell.

In a brief statement this afternoon, United Technologies said that it ended the discussions after Honeywell "advised United Technologies that it is considering an alternative merger proposal received this morning." (

TheStreet.com/NYTimes.com

discussed the announcement in a separate

story.)

Last night, the companies disclosed they were in talks about a possible combination, boosting Honeywell's stock as much as 20% in after-hours trading. Shares of Honeywell tonight rose $2.75, or 6%, to $48.75 on

Instinet

as further speculation about its potential merger partners leaked out. United Technologies remained unchanged on Instinet, with 192,823 shares in play.

Other rumored possible buyers include

Tyco

(TYC)

and

General Electric

(GE) - Get Report

.

In recent action, shares of Tyco fell 13 cents, or 0.2%, to $50.38 on Instinet, while General Electric's stock gained $1, or 1.9%, to $53.25 on Instinet.

This evening's most-active stock on

TST Recommends

Island

ECN is power conversion manufacturer

Power One

(PWER)

. Shares of Power One, which replaced

Unicom

(UCM)

in the

S&P 500 Index on Wednesday, advanced 38 cents, or 0.45%, to $85.05 on Island.

Mercator Software

(MCTR)

, which plunged $7.66, or 62.5%, to $4.60 today, was lately up 9 cents, or 2.04%, to $4.69 on Island. Yesterday, Mercator posted a pro forma loss of 14 cents, compared to a year-ago profit of 8 cents.

Shares of

Copper Mountain Networks

(CMTN)

fell 9 cents, or 0.84%, to $11.03 on Island. The DSL provider was up $1.78, or 19.1%, to $11.13 on the day. Copper Mountain dropped 60% on Wednesday, after it warned on Tuesday that fourth-quarter and 2001 earnings would fall below estimates due to weakening demand.

After the bell,

Research In Motion

(RIMM)

stated that it filed to sell 6 million shares. On the news, RIM shed $5.94, or 5.06%, to $111.44 on Island and lowered $6.38, or 5.4%, to $111 on Instinet.

eBay

(EBAY) - Get Report

, which gained almost 10% during last night's extended trading session, again attracted investor attention. Tonight, however, the stock slid 25 cents, or 0.43%, to $57.81 on Island.

This information is provided by Instinet, a wholly owned subsidiary of Reuters (RTRSY) . For further information, please contact Instinet at www.instinet.com.

Island ECN, owned by Datek Online, offers trading, mainly in Nasdaq-listed stocks, from 7 a.m. to 8 p.m. EDT.

Confused?

TheStreet.com

explains how the rules change when the sun goes down in Investing Basics: Night Owl, a section devoted to after-hours trading.