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5. Fidelity Nasdaq Composite Index Tracking ETF (ONEQ)

It almost doesn’t get weirder than this. Index Universe: “Fidelity – one of the largest fund providers in the world — broke into the ETF space in 2003 with its first ETF, ONEQ … and then did absolutely nothing for most of a decade. That’s weird. Investors have done nothing with it either: ONEQ has seen zero inflows and zero outflows since May 17th, 2010, making it one of the most stagnant exchange-traded products in the world. Fidelity is now planning a bigger push into ETFs, but ONEQ stands alone as an odd bird.”

Indeed it does, but Fidelity said it’s just one of more than 1,400 exchange-traded products “we make available to our customers."

Photo: Getty Images | CNBC Composite