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Helena K. Marwood: Amazon KDP author data
As of Nov 6, 2026, Helena K. Marwood has 12 books on Amazon, 9 of them on a best-seller list in the last 30 days (best rank #12), mostly in Geometry & Topology, Topology, Game Theory.
| Median price | $10.99 |
|---|---|
| Price range (middle 50%) | $9.99 – $11.99 |
| Median reviews | - |
| Total reviews | 0 |
| New listings (30 days, incl. new editions) | 4 |
| Breakout books (30 days) | 3 |
What stands out
- 75% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- 4 new listings in the last 30 days (new editions included), 3 of them broke into a Best Sellers list.
Helena K. Marwood's best-ranked books
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Applied Geometric and Topological Data Analysis with Python: A Practical Guide to Manifold Learning and Shape Analysis
by Helena K. Marwood
- Price$11.99
- Reviews-
-
Python for Topological Data Analysis in Finance: Practical Implementations of Persistent Homology and Shape-Based Trading Strategies
by Helena K. Marwood
- Price$9.99
- Reviews-
-
Topological Data Analysis for Quant Finance: Persistent Homology, Shape Theory, and Market Regime Classification: How Market Shape Reveals Trends, and Volatility Shifts
by Helena K. Marwood
- Price$9.99
- Reviews-
-
Game Theory Applied: Strategies for Business, Politics, and Everyday Decisions
by Helena K. Marwood
- Price$10.99
- Reviews-
-
Differential Geometry: Curves, Surfaces, and Their Applications in Engineering Design and Physics
by Helena K. Marwood
- Price$9.99
- Reviews-
-
Applied Geometric and Topological Data Analysis with Python: A Practical Guide to Manifold Learning and Shape Analysis
by Helena K. Marwood
- Price$38.51
- Reviews-
- Published2026-09
-
Dynamical Systems in Finance: Nonlinear Dynamics, Bifurcations, and Stability Analysis
by Helena K. Marwood
- Price$29.99
- Reviews-
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Dynamical Systems in Finance: Nonlinear Dynamics, Bifurcations, and Stability Analysis
by Helena K. Marwood
- Price$9.99
- Reviews-
-
Functional Data Analysis & Operator Methods for Quant Finance: Infinite-Dimensional Time Series, Kernel Representations, and Market Regime Dynamics with Python
by Helena K. Marwood
- Price$0
- Reviews-
- Published2026-01
-
Machine Learning for Algorithmic Trading with Python: Predictive Models, Strategy Design, and Automated Systems
by Helena K. Marwood
- Price$0
- Reviews-
- Published2026-03
Main categories
FAQ
How many books does Helena K. Marwood have on Amazon?
KDPTop tracks 12 of their books; 9 made an Amazon list in the last 30 days.
Which categories does Helena K. Marwood publish in?
Their books chart most often in Geometry & Topology, Topology, Game Theory.
How does Helena K. Marwood price their books?
The median price is $10.99; half of the books cost $9.99–$11.99.
Has Helena K. Marwood released new books recently?
4 new books in the last 30 days, 3 of which reached a Best Sellers list.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.