There are companies like:
However their products and services are targeted for institutions and bigger businesses. Not sure you will find anything useful with them. As an example Bitgo, has some multisignature (2/3) offerings you can use as a single user and might be interesting if spreading your funds is what you are looking for.
Anyhow, I never used any of those, I only know about them due to some research I did a couple of years ago, so I can't recommend any of the above.
Thanks for the info anyway :)
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