SEIM vs SMOM

SEIMASEI QiM U.S. Large Cap Momentum Active ETF

SMOMBSymmetry Panoramic Sector Momentum ETF

In short

SEIM Momentum with a chaperone. SEI's quant model buys U.S. large caps that have been running, then leans on quality, value and low volatility to sand off the edges, all for 0.15% a year.

SMOM Most momentum funds rank individual stocks. SMOM ranks the 11 S&P 500 sectors, tilting toward whichever show the strongest relative trend and shifting as leadership rotates. An active, rules-based twist on a well-worn factor.

Stated mandate

SEIM The Fund seeks long-term capital appreciation by investing primarily in U.S. common stocks with relatively strong recent performance, using quantitative active stock selection and portfolio optimization.

SMOM The Fund seeks long-term capital appreciation.

Why people hold it

• SEIM Charges 0.15% a year, a fraction of the typical fund in its active momentum peer group and level with the cheapest brand-name momentum ETFs like MTUM.
• Not pure chase-the-winners: the prospectus model also weighs quality, value and low volatility, so recent strength gets vetted, not just ranked.
• Roughly 70 names, concentrated enough for the factor to actually show up, run as an active quant mandate rather than a fixed index rebuild.
• Stacks up as one of the stronger implementations among the systematic U.S. momentum funds we cover.

• SMOM Sector-level momentum is the rare angle here: a systematic read across the 11 S&P 500 sectors rather than a screen of hundreds of individual stocks.prnewswire.com
• At 0.63%, the fee sits just under the median for its systematic US momentum peer group, unusual for a strategy run actively rather than off a licensed index.
• Symmetry runs the momentum signals and the rebalance schedule in-house, so the sector calls are the manager's own rather than an index provider's.prnewswire.com

Worth knowing

• SEIM Momentum buys what has already moved. When market leadership rotates, this style can turn over quickly and trail the broad market.
• Launched in 2022, so the live record is short and hasn't spanned many market regimes.
• Mid-sized and moderately traded, so bid-ask spreads are worth a glance at the moment you trade.

• SMOM Cost is the trade-off: index-based momentum rivals MTUM, SPMO, VFMO and JMOM all charge a small fraction of SMOM's 0.63%.
• Leaning into top-momentum sectors makes the portfolio much more concentrated than the broad market, so it can move well out of step with the S&P 500.prnewswire.com
• It launched in September 2025 and remains small and lightly traded, which means limited live history and wider spreads than the giants of the category.

Full SEIM profile⁠

Full SMOM profile⁠