The recent spike in stock market volatility has dented the momentum factor’s powerful bull run, but the strategy continues to reign supreme over its main competitors in the US equity factor space, based on a set of proxy ETFs.

For the one-year trend, it’s still a one-factor race. The iShares Edge MSCI USA Momentum Factor (MTUM) is up a strong 34.3% for the 12 months through yesterday’s close (Feb. 12) and there’s a wide moat that separates the ETF from the rest of the field. The second-best one-year performer (iShares Edge MSCI USA Quality Factor ETF (QUAL)) is ahead by a distant 17.8%–an impressive return in its own right, but no match for MTUM’s one-year rise.

Note, too, that MTUM’s one-year change is also far ahead of the broad market’s gain. The SPDR S&P 500 (SPY) is up 16.8% over the past 12 months. That, too, is a solid run, but MTUM’s gain is roughly twice as high.

Does the profile for factor ETFs look different in recent history? Not according to a roundup of trailing 30-day returns. In fact, MTUM’s dominance looks even stronger for this time period. Indeed, momentum’s 2% gain over the last 30 days is conspicuous as the only positive return among the factor ETFs.

One reason that MTUM continues to exhibit unusually strong performance is its extraordinary run over the past year – a gift that keeps on giving in terms of relative performance. As the next chart reminds, the horse race of late has been remarkably kind to the momentum factor over the past year, an advantage that will probably endure in some degree for the near term.

The question is whether the jump in market volatility is an early sign that mark’s the beginning of the end for momentum’s reign? For the moment, there’s no sign that the king is about to be dethroned. But heightened market turbulence, if it continues, may take a toll.

Can a momentum strategy continue to dominate the factor landscape without the support of the consistent uptrend in the broad market that’s prevailed until recently? Perhaps not, although the answer will depend on how much damage, if any, is sustained in the competing factor strategies during a regime shift for market activity. Meantime, momentum’s edge still looks impressive.

For additional research on the factor ETFs cited above, here are links to the summary pages at Morningstar.com:

iShares Edge MSCI Min Vol USA (USMV) – low-volatility
Vanguard High Dividend Yield ETF (VYM) – high-dividend yields
iShares Edge MSCI USA Quality Factor (QUAL) – so-called quality stocks
iShares Edge MSCI USA Momentum Factor (MTUM) – price momentum
iShares S&P Small-Cap 600 Value (IJS) – small-cap value stocks
iShares S&P Mid-Cap 400 Value (IJJ) – mid-cap value stocks
iShares S&P 500 Value (IVE) – large-cap value stocks
iShares Core S&P Small-Cap – small-cap core