His book, DO IT YOURSELF INVESTING FOR BUSY PEOPLE: TRADEANYTIME, reveals that consistent, profitable trading can be done in less
than 25 minutes a day—even during a lunch break or after work.
This insight isn’t theoretical. Marbury traded for more than
60 years while working full-time as a civil engineer and professional land
surveyor. Over the span of managing his company’s retirement plan for more than
30 years, he never experienced a losing year. The message is simple: successful
trading depends more on strategy, discipline, and structure than on time
availability.
This blog explores why busy professionals—a category most
new traders fit into—actually have a unique advantage in the trading world.
1. Busy People Are Forced to Trade Efficiently
One of the biggest problems new traders face is
overthinking. When someone has unlimited time to stare at screens, they often
fall into emotional decisions, impulsive trades, or constant strategy
switching.
Busy professionals don’t have this luxury.
Marbury’s strategy was built around this reality. He used
tools such as:
- Limit
orders
- Good-til-canceled
(GTC) orders
- Trailing
stop orders
These simple tools allow traders to act with intention
rather than emotion. You set your price, define your risk, and let the order
execute automatically. This reduces stress and prevents the kind of unnecessary
“tinkering” that causes many traders to lose money.
When you only give yourself structured trading time, you
eliminate noise and focus only on what matters.
2. Stock Screens Make Decision-Making Faster
One of the most valuable parts of Marbury’s book is his collection
of stock screens. These screens filter thousands of stocks down to a small,
manageable list that match very specific criteria. Some of these screens
include:
- Simple
Moving Average Screen
- Analyst
Opinion Screen
- Uptrend
Screen
- Uptrend
+ P/E Screen
- Bear
Stocks Above 40 Screen
Each screen uses criteria such as:
- Volume
- Price
performance over multiple time frames
- Analyst
ratings
- Trend
direction
- Valuation
metrics
For a busy individual, this is game-changing. Instead of
scrolling through endless stock lists, you run a screen and instantly see only
the top candidates. This turns a time-consuming process into a quick,
structured one.
3. Economic Awareness Can Be Learned Quickly
Many new traders think they need deep economic knowledge to
trade correctly. Marbury shows this isn’t true. Traders only need to understand
how a handful of important economic reports influence the market, such as:
- CPI
- PPI
- JOLTS
- ADP
- PCE
- Federal
Reserve decisions
These reports often signal whether interest rates are rising
or falling, and that alone can influence market direction. You don’t have to
study economics—you just need to understand the basic meaning behind these
announcements.
A busy professional can learn this in minutes and use it to
avoid trading blindly during major financial news events.
4. Options Don’t Have to Be Complicated
Options trading intimidates many beginners, but Marbury
simplifies it by sticking to the strategies he personally used:
- Single-leg
calls and puts
- Covered
calls
- Debit
spreads
- Long
straddles
He explains the concepts in plain language and teaches how
to calculate:
- Maximum
profit
- Maximum
loss
- Break-even
prices
These calculations help traders avoid dangerous surprises.
For someone with limited time, knowing the exact risk of a trade before
entering it removes uncertainty and increases confidence.
5. Built-In “Insurance” Protects Busy Traders
One of the most practical parts of Marbury’s approach is the
use of insurance-style strategies to protect your positions. These include:
- Protective
puts
- Trailing
stop losses
- Stop
orders
These tools limit loss automatically. For a busy trader who
can’t monitor the market constantly, this safety net is essential. It prevents
small losses from becoming catastrophic ones.
6. Simplicity Creates Longevity
Marbury emphasizes that complicated strategies are not
necessary to earn consistent profits. Many advanced option setups require
constant monitoring, multiple legs, and a deep understanding of volatility. He
tried them all—and eventually stopped using them.
Simple strategies last longer because they are easier to
follow, easier to execute, and less stressful. Busy professionals thrive in
structured environments, and trading is no different.
Conclusion: You Don’t Need More Time—You Need a Better System
Trading successfully is not about watching the market all
day. It’s about knowing what to look for, using the right indicators, and
following a clear plan. Marbury created his do-it-yourself system so that
anyone—even someone with a demanding job—can trade confidently and responsibly.
The truth is that busy people often make the best traders
because they don’t have time to overcomplicate things. They follow the plan,
trust the system, and trade with purpose.

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