Internet and technology stocks rallied again Wednesday, pushing the Nasdaq Composite to new highs while extending the Invesco QQQ’s (NasdaqGM: QQQ), which tracks the tech-heavy Nasdaq-100 Index, year-to-date gain to over 18%.

Stocks such as Apple (NASDAQ: AAPL), Google parent Alphabet Inc. (NASDAQ: GOOG), Facebook Inc. (NASDAQ: FB) and Microsoft Corp. (NASDAQ: MSFT) are pivotal to QQQ’s performance. With those factors in mind, it is increasingly risky to forecast when QQQ will even modestly pullback.

“Even more impressive, QQQ has now established a convincing foothold atop the round $180 level, which is quite the formidable price point. In addition to the usual psychological significance associated with round-number levels, QQQ $180 also happens to be the site of a 15% year-to-date gain, a 20% advance from the Feb. 9 intraday low, and the site of more than 90,000 call options set to expire within the next month,” according to Schaeffer’s Investment Research.

With technology’s ascent and that of QQQ, come concerns that the Nasdaq-100 is too heavily exposed to a small number of stocks. Additionally, some analysts opine that the benchmark’s significant technology overweight leaves it vulnerable should tech stocks fall out of favor. Due to tech’s ascent this year, QQQ’s exposure to the sector has increased while its consumer discretionary weight has been mostly steady. Those two sectors combine for over 82% of QQQ’s weight.

Talking Tech

The S&P 500 technology sector has contributed to more than three quarters of the broader index’s gains, according to S&P Dow Jones Indices.

After surging 37% last year, technology remains a favorite among investors, despite data suggesting technology stocks are relatively expensive as they trade at elevated price-to-earnings compared to the broader S&P 500.

“Notably, QQQ set its all-time closing high of $182.82 on July 25 — which gives $182 some instant significance as a potential level of resistance to clear going forward. And from an options perspective, the 182 strike carries open interest of more than 60,000 contracts set to expire over the next month,” notes Schaeffer’s.

Year-to-date, investors have added $3.69 billion to QQQ.

For more news and strategy on the Technology market, visit our Technology category.

Tom Lydon’s clients own shares of QQQ, Apple, Facebook and Microsoft.