About Portal Redwood Hub
A Khlong San classroom devoted to sector rotation chart study — pencil, paper, and patient marking.
Registered business
Portal Redwood Hub Co., Ltd. is the official registered business name operating chart training workshops at 309 Somdet Chao Phraya Road, Khlong San, Bangkok 10600. The company was established in 2019 after founder Somchai Viriyapong left a proprietary trading desk and began hosting informal chart circles for former colleagues who wanted structured rotation practice away from live screens.
How we started
In 2019, a group of Bangkok equity traders asked Somchai to run a monthly session comparing SET sector ETFs on printed weekly charts. Word spread through desk referrals — not advertising — and by 2021 the informal circle needed a dedicated room near the Chao Phraya riverfront. Portal Redwood Hub Co., Ltd. was registered to formalize bookings, print workbooks, and handle workshop deposits.
We kept the original method: small groups, paper panels, and spoken review. When traders asked for more frequent contact, we added Thursday chart circles and private review hours rather than expanding into online courses or signal groups.
What we teach
Our subject is sector rotation chart study for equity traders — how to mark relative strength, compare sector leadership on weekly timeframes, and maintain a rotation watchlist you actually update each Sunday. We do not sell trading signals, brokerage services, or software subscriptions.
Our approach
Sessions are limited to twelve seats in the flagship workshop so the instructor can review each trader's markings. We provide workbooks, rulers, and sector printouts; you bring discipline and a notebook. Afternoon review circles are optional but most participants stay — explaining your chart aloud reveals gaps that silent study misses.
People
Somchai Viriyapong
Founder & lead instructor. Twelve years marking sector charts on Bangkok desks before opening the classroom.
Nattaya Prasert
Chart circle facilitator. Focuses on relative strength technique and watchlist maintenance.
Relationship to clients
Many participants return for quarterly refreshers when market leadership rotates — for example when cyclicals take over from defensives after a rate cycle shift. We stay in touch through optional chart circles, not mailing lists or upsell funnels. If a workshop date does not suit you, we suggest the next open seat rather than pushing alternate products.