Sold Balance of RIO

I sold the balance of the RIO shares at 49.615. I normally sell at open but I was busy at the time. Today is the ex-Date and I will be paid a dividend of 29.55 on the 22nd of September.

My closed trades are as follows:

Code	Bought	Buy Price	Volume	Dividend	Sold	Sell Price	Dividend Paid	Profit	% Gain	% Dividend	Value @ Buy
CQR	10-May	4.85	1050	0.141	11-Aug	4.874	148.05	173.25	3.4%	2.91%	5092.50
PRG	13-May	1.545	1700	0.050	26-May	1.9	0	603.50	23.0%	3.24%	2626.50
PRG	13-May	1.55	1600.00	0.050	1-Jul	1.71	0	264.00	10.7%	3.24%	2472.00
HPI	18-May	2.76	1811	0.084	28-Jun	3.07	0	561.41	11.2%	3.04%	4998.36
ABP	31-May	3.29	1524.00	0.085	20-Jul	3.19	129.54	-21.34	-0.4%	2.58%	5012.44
RIO	26-Jun	43.42	65	1.440	13-Jul	49.61	0	402.35	14.3%	3.32%	2822.30
SUN	28-Jun	11.57	216	0.370	27-Jul	13.42	0	399.60	16.0%	3.20%	2499.12
RIO	26-Jun	43.42	50	0.591	11-Aug	49.615	29.55	339.30	15.6%	1.36%	2171.00
							277.59	2382.77	9.3%		25523.22

The return on the original investment is 7.22% which is 28.3% annualised. I'm currently selling half of my shares in a stock if my profit goes above around 15%.