Choosing a thesis topic

Not sure what experience you have in research papers like an undergrad thesis, but assuming it's your first time I'd recommend starting really broad in a certain sector (passive investing, sure), reading as much of the current field that exists, learning about existing data sources, then formulating a potential methodology, which is really what your thesis should focus on.

I found it much harder to start with an actual question without first learning what existing literature had to say. Have fun

I think the HFC and algo trading idea could be interesting. With those, you could talk about how it has small impacts on a large scale (your call if you want to call it good or bad)c, but there’d a duality since they provide so much liquidity to markets (essential to tight spreads and investor confidence)

Hello, writing papers, preparing abstracts or something similar is always a difficult process, for me, it was always something overwhelming since I was not ready to sit for days on a task, but I often use https://edusson.com/write-my-thesis and recommend that you go to study this review, learn about cool writing services and the best writers, without wasting time learn more, make an order, and the team of professional writers takes care of your thesis. Better do something more important and feasible for you at this time, good luck!