How do I enter an stock investment loss in a LLC in turbo tax? It it pulling it in under my personal losses.

[Mike9241]

we need more info because, depending on the facts, the loss could be an ordinary business loss or a capital loss.  What type of entity was it?   what happened to it? 

A single-member LLC would likely be an ordinary loss. A multi-member LLC could be capital but it depends on your basis and losses and distributions to determine your tax basis during the course of your ownership

a publicly traded partnership would likely be a capital loss, but you woukld ned to use the supplemental sales schedule to determine the proper reporting 

[MelindaS1]

Start by entering the K-1 income into the return as you typically would each year, follow the prompts until you see this screen - then check one of these 2 boxes for disposal (the top box, for a full disposition): 

The program will guide you from there to enter the necessary details to report the long-term loss on sale / redemption of partnership interest, which will flow to Schedule D / Form 4797 / etc., given your specific entries to the following question prompts. Note: ownership and sale of a partnership interest is usually a capital gain/loss transaction, and should flow to your individual capital losses. 
 

Learn more: 

IRS LB&I - Sale of a Partnership Interest

TurboTax - How do I report the sale of Publicly Traded Partnerships [...]