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When I Started Choosing Core Assets With Alpha, Not With a Feeling

Redefining 'core assets' with Alpha: no longer picking based on feeling or familiarity, but screening with three quantifiable lines — excess return, Sharpe Ratio, and downside protection. A replicable framework for selecting core assets.

Trading System SOP Asset Allocation Framework Asset Allocation · Alpha Stock Selection · Long-Term Holding

When I Started Choosing Core Assets With Alpha, Not With a Feeling

Personal Memo
This article isn't about sharing performance, and it isn't trying to convince anyone of anything. It's just a memo I'm leaving for my future self — the real danger was never market volatility, it's forgetting why I made a certain choice once conditions change.

What Is My Real Goal, Actually?

For the overall account's NAV to grow upward steadily and bearably over a long period. It's not about maximizing any single return — it's about satisfying these three conditions at the same time:

Volatility can't be so high that it makes me change strategy
A sharp drop can't force me to sell other assets
Long-term compounding can't be repeatedly wrecked by drawdowns

Why Reexamine VOO / VOOG / VONG / SPMO?

I used to intuitively assume: a momentum strategy (SPMO) should be the core with the highest growth efficiency; high-dividend assets are "conservative"; growth ETFs are just a supplement.

But once I pulled the lens back from "a single asset" to "the overall account NAV," these intuitions started to crack. What I needed wasn't which name "feels stronger" — it's which one is genuinely stable and efficient within the overall account framework.

What "Factual Metrics" Did I Use to Reevaluate?

Setting intuition aside, I switched to four quantifiable factual metrics to systematically reexamine every candidate core asset:

1
Volatility

Which one makes the account's equity curve least smooth? Higher volatility means more pressure toward irrational decisions.

2
Long-Term Performance (CAGR)

Which one genuinely earns more across a complete cycle? Not a bull-market spike — a complete cycle.

3
Recovery Ability After a Sharp Drop

Which one recovers steadily after a drawdown? How smooth that recovery curve is determines the holding experience.

4
Alpha (Risk Efficiency)

Which one leaves the most net return for the "same amount of risk" taken on? The Sharpe Ratio is the key here.

The Conclusion the Data Gave Me (Not a Feeling)

Evaluating each of the four candidate core assets against the four factual metrics gives the following results:

SPMO
WARNING — NOT SUITED AS A CORE

Highest volatility, deepest max drawdown, least stable recovery, and a lower Sharpe Ratio. It runs fast in certain phases, but it drags down the quality of decisions across the overall account. It can only be a "style tilt," not a core.

VOOG
WATCH — A TACTICAL TOOL

Growth concentrated in mega-caps, strong bull-market punch, but volatility and drawdown expand right along with it. Suited for a tactical bet, not suited to carrying the job of stable overall-account growth.

VOO
BENCHMARK — THE MARKET ITSELF

Stable and predictable, but with no stylistic efficiency gain. It's the baseline for every evaluation, not the best solution.

VONG
RECOMMENDED — FIRST CHOICE FOR A CORE ASSET

Lower volatility than VOOG/SPMO, long-term annualized return that's nearly as good, a smooth recovery after sharp drops, and the best Sharpe Ratio and drawdown-adjusted return. It leaves the most net profit for the same amount of risk.

The One Fact I Finally Accepted

"The alpha that's actually valuable isn't the one that runs the fastest — it's the one that lets the account keep slowly growing even when I do nothing."
Conclusion: SPMO gets a small style-tilt allocation, not a core role. VONG becomes the long-term core, taking over the capital-carrying role once held by high-dividend assets.

This isn't a change of belief — it's starting to choose with a "system" instead of "expectation."

Core Asset Selection Criteria (Alpha Version)

Defining Alpha
The ability to leave the most net profit for the overall account NAV under the same amount of risk. Not a short-term excess return, and not a thematic windfall.
Four Thresholds
1
Volatility Threshold
Annualized volatility must not be significantly higher than the market (VOO), and must not amplify the overall account's VaR
2
Long-Term Performance Threshold
CAGR across a complete bull-bear cycle (8–10 years), must not rely solely on a single bull-market phase
3
Drawdown and Recovery Threshold
Maximum drawdown must not be significantly worse than the market, and the recovery curve must be smooth
4
Alpha (Risk Efficiency) Threshold
The Sharpe Ratio needs to be better than, or at least not worse than, the market
Role Grading
Core Asset Clears all four gates, eligible for long-term regular investment
Style-Tilt Asset Only wins on some metrics — treat its role as tactical, not permanent
Any asset that requires me to "talk myself into" continuing to hold it doesn't qualify to be a core.
A Note to My Future Self, for When I Waver
"The job of a core asset isn't to let me beat the market — it's to let me stay in the market long enough."
This isn't a feeling. This is a system.
This article is a personal record of investment thinking and does not constitute investment advice.
Trading financial instruments carries risk; please evaluate carefully based on your own circumstances.
© 2026 Shiba the Disciplined, Ben. All rights reserved.