Net Position Chart

[chughes499]

Hey Yall, I am trying to build a chart that measures my net position overtime for investment purposes. How would I go about doing this? I have a time column and how many I buy/sold on another row. I think it is reading it as each buy or sell as that number instead of adding or subtracting from the previous position. How would I do it? Sample data: (I need it to look like that doesnt have the data beside it)

Sample data:

2-Oct-19	1:40:20 PM	B	20	2881
2-Oct-19	1:40:25 PM	B	20	2881
2-Oct-19	1:41:28 PM	B	10	2881
2-Oct-19	1:48:38 PM	B	20	2880.25
2-Oct-19	1:49:35 PM	B	25	2879.25
2-Oct-19	1:50:54 PM	S	-20	2878.5
2-Oct-19	1:53:29 PM	S	-25	2879
2-Oct-19	1:53:35 PM	S	-25	2879.25
2-Oct-19	1:57:27 PM	S	-10	2880.75
2-Oct-19	1:58:51 PM	B	25	2880.75
2-Oct-19	1:59:53 PM	B	25	2881
2-Oct-19	2:00:03 PM	B	25	2880.25
2-Oct-19	2:00:13 PM	S	-25	2880.75
2-Oct-19	2:00:31 PM	B	25	2880
2-Oct-19	2:00:58 PM	B	25	2879.5
2-Oct-19	2:02:26 PM	B	25	2879
2-Oct-19	2:03:01 PM	B	25	2878.5
2-Oct-19	2:03:01 PM	B	25	2878.5
2-Oct-19	2:03:02 PM	B	25	2878.25
2-Oct-19	2:03:29 PM	S	-25	2879.75
2-Oct-19	2:03:51 PM	S	-25	2880.5
2-Oct-19	2:04:05 PM	S	-25	2881.25
2-Oct-19	2:06:03 PM	B	25	2882
2-Oct-19	2:06:05 PM	B	25	2882
2-Oct-19	2:06:10 PM	B	16	2881.75
2-Oct-19	2:07:08 PM	B	25	2881
2-Oct-19	2:07:09 PM	B	25	2880.75
2-Oct-19	2:07:09 PM	B	25	2880.75
2-Oct-19	2:08:23 PM	S	-25	2882.5