Importing your broker's activity export
Serin can read a broker's own activity export and turn it into a transaction ledger — every buy, sell, dividend, deposit and fee, including positions you have already closed.
That last part is the reason to bother. A holdings import only knows what you own right now. It cannot see the stock you bought in March and sold in June, so it cannot tell you how that trade went, and it cannot compute a return that accounts for the money you added and took out along the way. The activity export can.
Files from a broker on this page are parsed exactly, on the server. No AI is involved and nothing leaves your instance — Serin recognises the format from its header row and reads the columns directly. Anything Serin does not recognise still goes through Smart Import's AI extraction, which is a good fallback but a worse tool for a file that already has a schema.
Robinhood
Where to download it
You need the Account activity report as a CSV. This is not the same thing as the monthly account statements, which are PDFs and are much harder to read accurately — if you end up with a PDF, you are in the wrong place.
On the web (easiest, and the only place you can pick a wide date range comfortably):
- Sign in at robinhood.com.
- Click your account icon, top right.
- Choose Reports and statements.
- Open the Reports tab — not Statements.
- Click Generate new report.
- Fill in the form:
- Account — pick the one you want. If you have both an individual account and an IRA, they export separately; do them one at a time and import each.
- Report type — Account activity.
- Date range — start from the day you opened the account, or as early as Robinhood lets you go. See the note on history limits below.
- Click Generate report.
The report is not instant. Robinhood prepares it in the background and it
appears in the same Reports list when it is ready — usually a minute or
two, occasionally longer for a multi-year range. You may also get an email.
Download it from that list; it arrives as a .csv.
In the mobile app, the same report lives under the Account tab → menu → Reports and statements → Reports → Generate new report. The steps are identical from there. The web version is still easier, because downloading a file on a phone and then uploading it to Serin is more work than it sounds.
Check you got the right file
Open it in any text editor. The first line should look like this:
"Activity Date","Process Date","Settle Date","Instrument","Description","Trans Code","Quantity","Price","Amount"
If it does, Serin will recognise it. If the first line looks like anything else, Robinhood has changed the format — send it to support@serin.money and the parser gets updated.
Then import it
In Serin: Smart Import → drop the CSV in → review the transactions → Import.
Re-importing is safe. Every row gets a stable fingerprint, so uploading an overlapping export later adds only what is new. You do not need to remember where the last one stopped — pick a range that overlaps generously.
What Serin does with each row
| Robinhood code | Becomes | Notes |
|---|---|---|
Buy, Sell |
buy / sell | Fee is recovered from the gap between quantity × price and the amount banked |
BTO, BTC, STO, STC |
buy / sell | Marked as options; a contract moves 100× its quoted price |
OEXP |
adjustment | An expired option — the position ends, no cash moves |
CDIV |
dividend | |
DTAX |
tax | Withholding on a dividend |
INT |
interest or fee | Interest earned is income; margin interest charged is a cost. Serin reads the sign |
ACH, RTP, WIRE |
deposit or withdrawal | Same — direction comes from the sign |
GOLD, DFEE, AFEE |
fee | Subscription and regulatory fees |
SPL, SPR |
split | |
REC |
transfer | Shares moving in or out without a sale |
Anything Serin does not recognise is left out and named, not guessed at. After an import you will see a line listing any codes that were skipped. That is deliberate: a ledger with a visible hole is far better than one with a plausible wrong row in it, because only one of those is something you can spot and fix. If you see a skipped code, send it to support and it gets added.
Two things worth knowing before you trust the numbers
Robinhood's export does not go back forever. You can only export the range Robinhood still holds. If you have held something since before that window, its purchase is not in the file, and Serin will not invent one — the position will show up in your holdings with no matching buy. Serin labels how far back its transaction history actually reaches rather than implying a complete picture, so check that label after importing.
Transfers in from another broker (REC) carry no cost basis. Robinhood
knows the shares arrived; it does not necessarily know what you paid for them
somewhere else. Those need their original purchase entering by hand, or
importing from the broker they came from.
Other brokers
Not yet parsed exactly — but Smart Import's AI extraction reads most CSV, PDF and screenshot exports well enough to review before importing, and it always shows you what it read before anything is written.
If you would like your broker parsed properly, send a sample export — with the amounts changed to anything you like, only the header row and the transaction codes matter — to support@serin.money. A parser is roughly an hour of work once the format is known.