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Market insights and trading education from the Alpha Sentinel team.

396 posts

Paying Off a Mortgage or Investing the Difference: How to Frame the Choice

Paying Off a Mortgage or Investing the Difference: How to Frame the Choice

Paying down a mortgage offers a certain saving, while investing offers an uncertain return. Compare what each choice secures and gives up.

October 13, 2026Admin
The Rule of 72: A Quick Way to Estimate Doubling Time

The Rule of 72: A Quick Way to Estimate Doubling Time

The Rule of 72 estimates doubling time by dividing 72 by the annual rate. See how it works, how accurate it is and where it falls short.

October 13, 2026Admin
How Market Bubbles Form: Lessons From Past Manias

How Market Bubbles Form: Lessons From Past Manias

Market bubbles share recurring traits, from easy credit to late-arriving buyers. Seven patterns from past manias worth recognizing today.

October 13, 2026Admin
Time in the Market Versus Timing the Market: What the Data Shows

Time in the Market Versus Timing the Market: What the Data Shows

What history says about staying invested versus market timing, why the best and worst days cluster, and how a written plan helps you hold steady.

October 13, 2026Admin
Exercising Stock Options: Factors to Weigh Beyond the Share Price

Exercising Stock Options: Factors to Weigh Beyond the Share Price

Share price is only one input when exercising options. Weigh the cash, tax, expiration and concentration questions before the deadline arrives.

October 13, 2026Admin
Stock Options Basics: Incentive Versus Nonqualified Options

Stock Options Basics: Incentive Versus Nonqualified Options

ISOs and NSOs both let you buy shares at a set price but are taxed differently. Get plain answers on exercise, AMT and holding periods.

October 13, 2026Admin
Investment Recordkeeping: What Documents to Keep and for How Long

Investment Recordkeeping: What Documents to Keep and for How Long

Investment recordkeeping explained: which documents prove your cost basis, how long to keep them, and a simple yearly routine you can sustain.

October 13, 2026Admin
How Often Should You Check Your Portfolio? What the Research Suggests

How Often Should You Check Your Portfolio? What the Research Suggests

Checking more often tends to raise stress, not insight. Five points on picking a review rhythm that fits your horizon, your habits and your job.

October 13, 2026Admin
Giving a Trusted Person Limited Access to Your Brokerage Accounts: Questions to Ask

Giving a Trusted Person Limited Access to Your Brokerage Accounts: Questions to Ask

Before you name a helper on your accounts, work through six questions on purpose, access levels, the right person, limits, security and reviews.

October 13, 2026Admin
Managing an Inheritance: First Steps Before You Invest

Managing an Inheritance: First Steps Before You Invest

An inheritance calls for patience, not speed. Learn the first steps: what you received, how the tax rules apply and how to build a plan first.

October 13, 2026Admin
A Year-Round Investing Calendar: What to Review in Each Quarter

A Year-Round Investing Calendar: What to Review in Each Quarter

A quarterly investing calendar for busy professionals: what to review from January to December and which life events deserve a review off schedule.

October 13, 2026Admin
Planning the Transition to Part-Time Work: Cash Flow and Portfolio Questions

Planning the Transition to Part-Time Work: Cash Flow and Portfolio Questions

Moving to part-time work changes what a portfolio has to do. Map spending, taxes and timing before the first reduced paycheck arrives.

October 13, 2026Admin