Quant Momentum Strategy

Historically, momentum strategies in Canada have generated roughly 3-5% annual alpha over the broad market (S&P/TSX Composite), and the Morningstar Canada Momentum Index (WXM) has at times outperformed by much larger margins in strong trends. However, returns vary significantly by year - some years +15% alpha, others -5%. Expect higher volatility than index investing. Long-term (5+ years) investors benefit most from momentum's compounding alpha.

25-35 stocks is the sweet spot. Fewer than 20 creates concentration risk and high tracking error. More than 50 dilutes momentum exposure and approaches index returns. 30 stocks provides good diversification while maintaining meaningful momentum tilt - and in Canada you need enough names to respect sector caps given the concentrated index.

Research shows 12-month (excluding recent month) is optimal. 1-month has too much noise and reversal effects. 6-month works but misses some momentum. 12-month captures the full momentum cycle. The '12-1' formulation (skipping recent month) further improves by avoiding short-term reversal.

Monthly is standard - it captures momentum shifts while keeping turnover manageable (~200% annually). Quarterly rebalancing reduces costs but may miss momentum changes. Weekly is too frequent. Monthly with a buffer zone (exit at rank 40, not 30) optimizes the trade-off. Because Canada has no transaction tax, turnover is cheaper here than in many markets - the bigger consideration is account structure and capacity, not trading cost.

Yes, momentum can and does lose money, especially during 'momentum crashes' when past winners sharply underperform. Crashes of -20% or more happen every few years (2008-09, 2020, 2022). In Canada, a sharp reversal in oil or gold can also drive drawdowns given the resource weight of the index. Over full market cycles (5+ years), momentum has historically delivered positive alpha. Risk management (volatility scaling, stops) helps manage drawdowns.

Multiple approaches: (1) Volatility scaling - reduce exposure when VIXC > 25. (2) Portfolio stop-loss at -15% drawdown. (3) Factor monitoring - reduce if momentum factor underperforms 2+ months. (4) Diversify with other factors (quality, low volatility). (5) Hedging with S&P/TSX 60 (XIU) puts during elevated risk. (6) In Canada, watch commodity trends as an extra early-warning input. Combining approaches provides layered protection.

Equal weight is simpler and more diversified - each stock gets the same allocation. Momentum-weighted concentrates on the strongest stocks for potentially higher returns but more risk. Risk-parity (inverse volatility) weighting is another option that balances risk and is particularly useful in Canada because it trims volatile gold/uranium names. For most investors, equal weight with sector constraints works well.

Several approaches: (1) Sequential screening - first filter for momentum, then quality. (2) Composite scoring - weighted sum of momentum, quality, value scores. (3) Separate portfolios - allocate 60% to momentum, 40% to quality, rebalance between them. (4) Intersections - only buy stocks in the top quartile of BOTH factors. In Canada, adding quality/low-vol is a useful counterweight to the resource-momentum tilt. Start simple (sequential) and add complexity as needed.

Transaction costs are low: commissions are often C$0 at zero-commission brokers, and there is no securities transaction tax. The main cost is the bid-ask spread/impact - roughly 0.02-0.05% for liquid S&P/TSX 60 names and 0.10-0.40% for mid/small caps, where Canadian liquidity is thinner. Total round-trip is typically 0.05-0.25%. On tax: capital gains use a flat 50% inclusion rate with no holding-period distinction (the 2024 proposed increase to 66.67% was cancelled in 2025 - it remains 50% for 2026). Watch the 30-day superficial-loss rule and the risk that very frequent trading is taxed as business income (100% inclusion). The biggest after-tax lever is running the strategy inside a TFSA or RRSP.

Key requirements: (1) 10+ years data, survivorship-bias free (include delisted/acquired stocks). (2) Point-in-time universe (S&P/TSX Composite as of each date, not current constituents). (3) Walk-forward testing (train on 70%, test on 30%, roll forward). (4) Include realistic spread/impact costs and Canadian liquidity limits. (5) Out-of-sample validation - expect 20-30% performance decay from in-sample. Use out-of-sample results for planning, and weight expectations toward liquid large caps since small-cap momentum may not scale.

Feature engineering: 12-1 return, risk-adjusted momentum, relative strength, earnings momentum, RSI, sector momentum, VIXC, and (Canada-specific) oil/gold/CAD features. Target: Top tercile classification or return regression. Model: XGBoost or LightGBM (best for tabular data). Training: Time-series split, walk-forward retraining monthly. Integration: ML probability as 40% weight combined with 60% traditional momentum. Expect 2-3% additional alpha from ML enhancement.

Long leg: Buy top 40 stocks by momentum (50% of capital). Short leg: Short bottom 40 via securities borrow or, for some names, Montreal Exchange single-stock futures (another 50%). Gross exposure 200%, net ~0%. Canadian advantages: borrow is generally accessible and there is no uptick rule (restrictions are circuit-breaker based). Challenges: borrow cost/availability for smaller names, squeeze risk, dividend reimbursement. Sector-neutralize the legs - critical given index concentration - rebalance monthly, and monitor shorts more frequently. Higher Sharpe but more complex execution.

Risk parity weights each stock inversely to its volatility so each contributes equal risk. Formula: Weight_i = (1/Vol_i) / Sum(1/Vol_j). Low-vol stocks (banks, utilities, telecoms) get more capital, high-vol miners less. Combined with momentum: select by momentum, weight by inverse vol. Add volatility targeting: scale total exposure to maintain a target portfolio vol (e.g., 15%). Result: momentum exposure with balanced, consistent risk - especially valuable in Canada where resource momentum is volatile.

Base allocation 100%. Modifiers: VIXC > 25 to -25%; VIXC > 35 to -50%. Momentum factor negative 2 months to -25%. Bear market regime to -25% to -50%. Ranging market to -25%. Commodity (oil/gold) breakdown to additional -10%. Calculate weekly, but smooth transitions over 2-4 weeks. Example: VIXC 30 (-25%), factor weak (-25%) = 50% allocation. When multiple signals are negative, compound reductions but maintain a 25% minimum.

Data pipeline: Automated daily price/volume updates, corporate action adjustments, quality checks. Execution: Broker API integration, order generation from targets, TWAP/VWAP algorithms. Risk: Real-time position monitoring, drawdown alerts, factor and sector-cap exposure tracking. Reporting: Daily P&L, weekly risk, monthly attribution. Governance: Change management process, backtest before modifications. Account structure: plan which sleeves run in registered (TFSA/RRSP) vs taxable vs corporate accounts. Start simple, add sophistication as AUM grows.