Start with understanding
Investing Basics
Understand a little. Practice once. Write your own plan. Each lesson explains an idea with an example, then asks you to answer a question and write a short reason before reading the explanation. Gather your thoughts as you learn, then follow the prompts to write your own learning or investment plan.
New to iMaster? Take a guided look around
From the market to your holdings, see where to find each feature.
Watch the starter guideAbout 5 minutes
Read and practice first. Sign in to save personal plans and records.
Sign in to save progressReal historical documents · no trading simulation
Financial credibility and incomplete evidence
Information available as of: Dec 17, 2020, 12:00 AM UTC
On December 16, 2020, the SEC disclosed accounting-fraud charges and a settlement involving Luckin Coffee, alleging over $300 million in fabricated retail sales. Distinguish allegations, disclosures, and inference.
Cases use facts published by the cutoff, without inferring later prices. External pages may contain later updates; check their links after answering.
Use the evidence above to answer a question
Choose an answer using only what was known at the time and write a short reason. Submit to read the explanation and any later evidence, then compare it with what you could have known then.
Learning and research support; no personal trade instructions or guaranteed returns. · Version 2026-09-13.1