Hello,
I invested in this security :
and, in my portfolio, I could only find this security:
which is the closest in terms of price (here €4.10 compared to €4.03). I have a feeling this isn’t the right security, yet I’ve checked all the securities in J4V.
If you have any good ideas on how to find the right security, I’d love to hear them 
Thanks
dregnier
Translated with DeepL.com (free version)
Try comparing ISIN or WKN instead of symbol.
It’s the question, if you’re comparing real-time prices (upper screenshot) vs. end-of-day (lower screenshot)?
Furthermore, which exchange you’re focusing?
Last but not least, bid or buy prices?
The top screenshot (Interactive Brokers) is in real time, whilst the bottom one shows the asset’s quote after selecting Online > Refresh Quotes; the quote is therefore updated within a few seconds of the real-time figure.
The screenshot at the bottom shows that the update is sourced from Yahoo Finance and that the stock exchange is Frankfurt, where I purchased the asset, as shown in the Interactive Brokers screenshot.
When I compare €4.03 and €4.10, these are the asset’s prices at the moment I refresh them.
Compared to Börse Frankfurt vs Yahoo Finance, the latest price is 4,0300 EUR.
Interactive Brokers I can’t check, as I don’t have a account their.
But according to Onvista, the security is traded after Frankfurt exchange were closed.
Thanks @Rafa, that’s very kind of you.
I get the feeling that the share I’ve added to my portfolio isn’t the one I bought on IBKR.
On IBKR, the price is constantly fluctuating, whereas the share saved in my portfolio hasn’t moved, as far as I can tell, all day and is currently showing €4.03, as your screenshots show.
In the IBKR screenshot, the stock name is: J4V VAR ENERGI ASA FWB, where FWB stands for the Frankfurt Stock Exchange. The price fluctuates throughout the day, and given that my screenshot shows €4.03 and your screenshots also show €4.03, it does indeed appear that the price is being quoted at the close.
As far as I understand ‘bog-standard’ sources (inc Yahoo Finance) draw on data from LSE, Euronext etc. Once these exchanges close stock prices are typically ‘frozen’ at the last official close. I don’t use IBKR but know it offers ‘after hours trading’, and I’m guessing during periods when such exchanges are closed its able to derive pricing data from alternative trading systems like Tradegate or Chi-X. This may explain this apparent discrepancy…
Thanks @Rich28 for your message.
I agree with you – you’re absolutely right.
IBKR, where I’ve recently opened an account, isn’t BoursoBank. IBKR displays post-close prices, and it’s actually not that easy to work out what the closing price was on a given date. I’ve made a rule of thumb out of it and simply use the closing price provided by Yahoo Finance.
That’s probably the best way to go. After hours trading activity is likely to be considerably lower than the volumes that typically occur on the main exchanges and pricing levels may be all over the place. Personally, I reckon we’re already contending with enough volatility atm 
