TOKYO, June 27 (Reuters) - Japan's Nikkei share average headed for a fourth straight decline on Tuesday, as investors continued to take profits following the index's surge to a 33-year peak last week.

Many of the nation's biggest technology names were sold off, facing additional pressure from big declines in the U.S. Nasdaq index overnight.

The Nikkei slid 0.77% to 32,446.70 at the midday break. It fell as much as 1.2% earlier in the session, but bounced back after nearing the 25-day moving average at 32,268.00.

The benchmark index lost 2.6% over the previous three sessions, and a fourth straight decline would be the longest run since mid-December. It reached a post-bubble-era high of 33,772.89 on June 19.

The broader Topix slipped 0.57% to 2,247.31.

"The selloff is broad," and "any paring of losses today is likely to be quickly met with renewed selling pressure," said Kazuo Kamitani, a strategist at Nomura Securities.

However, "there's nothing eyebrow-raising about a decline as far as the 25-day moving average," he added.

Online company CyberAgent led Nikkei decliners with a 4.1% drop, while chip-testing equipment maker Advantest - whose share fortunes have been closely tied to customer Nvidia amid the AI euphoria - slumped 3.1%.

Startup investor SoftBank Group fell 1.66%, Sony Group slid 2% and online staffing agency Recruit Holdings dropped 2.54%.

On Wall Street overnight, the tech-heavy Nasdaq tumbled 1.36%, compared with a 0.45% decline in the broader S&P 500.

Uniqlo store operator Fast Retailing was 0.64% lower, falling for a fourth session after hitting a record high last week.

By contrast, shippers were big gainers once again, with Kawasaki Kisen Kaisha leading advancers with a 10.2% surge. Peer Nippon Yusen was next, up 3.6%.

Tokyo Disney Resort-operator Oriental Land was no. 3, gaining 2.96% after announcing an increase in ticket prices from October. (Reporting by Kevin Buckland; Editing by Varun H K)