Fortinet, Inc. (0IR9.L) LSE

Currency In USD

0IR9.L Historical Return

If you invested $1000 in Fortinet, Inc. (0IR9.L) since IPO date, it would be worth $579.84 as of October 22, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $516.48, while $1000 invested 1 year ago would be worth $2,047.1. This corresponds to total returns of -42.02%, -48.35%, 104.71%, respectively, with annualized returns of -9.95%, -12.37%, 104.71%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

0IR9.L Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
October 21, 2026	170.88	174.83	174.83	175.28	162.22	14,811
October 20, 2026	171.5	170.77	170.77	173.5	166.6	2,142
October 19, 2026	171.5	173	173	173.44	167.34	10,053
October 16, 2026	180.75	168.85	168.85	185.92	166.77	25,181
October 15, 2026	182.98	180.32	180.32	183.01	178.21	15,131
October 14, 2026	190.57	185.33	185.33	193.72	183	14,279
October 13, 2026	192.24	191.74	191.74	197.16	190.06	5,880
October 12, 2026	194.72	192.84	192.84	198.6	192.09	15,459
October 09, 2026	189.3	194.13	194.13	194.45	186	14,438
October 08, 2026	189.18	189.73	189.73	192	184.28	6,721
October 07, 2026	192.4	190.47	190.47	193.41	188	3,808
October 06, 2026	185.81	189.98	189.98	192.42	181	12,798
October 05, 2026	185	183.58	183.58	185	175.25	13,002
October 02, 2026	180	180.58	180.58	182.96	175.01	5,170
October 01, 2026	178.08	177.35	177.35	181.8	175.01	4,965
September 30, 2026	176.45	179.91	179.91	180.46	170.39	4,649
September 29, 2026	176.22	174.75	174.75	176.4	172	2,170
September 28, 2026	173.24	175.84	175.84	177	168	4,404
September 25, 2026	178.2	174.61	174.61	183	172.83	6,159
September 24, 2026	180.84	179.31	179.31	182.7	175	5,884
September 23, 2026	176	177.77	177.77	178.06	171.35	11,677
September 22, 2026	179	174.73	174.73	179.03	170.08	12,676
September 21, 2026	166	174.35	174.35	175.01	166	14,759
September 18, 2026	172.48	168.86	168.86	176.89	166.13	5,826
September 17, 2026	172.2	173.12	173.12	176.08	168	14,592
September 16, 2026	173	172.47	172.47	174.63	165.56	38,773
September 15, 2026	168.55	173.7	173.7	173.86	163	7,776
September 11, 2026	159.54	155.51	155.51	162	155.22	2,228
September 10, 2026	157	158	158	161.89	154.03	3,889
September 09, 2026	157.47	157.69	157.69	160	153.5	8,403
September 08, 2026	157.25	156.45	156.45	157.47	151.83	5,285
September 04, 2026	157.51	156.45	156.45	159.53	153	3,880
September 03, 2026	155.34	157.06	157.06	161.1	153	6,736
September 02, 2026	164.5	153.25	153.25	166	151.85	20,510
September 01, 2026	172.98	162.22	162.22	172.98	160.75	21,450
August 28, 2026	167.57	164.78	164.78	175	162.69	5,790
August 27, 2026	159.45	171.81	171.81	172.03	157.83	5,388
August 26, 2026	157	158.16	158.16	158.16	148.13	2,357
August 25, 2026	152.83	152.58	152.58	157.02	151.5	6,229
August 24, 2026	153.98	152.81	152.81	155.05	150.64	4,782
August 21, 2026	150.93	152.15	152.15	153	148.14	2,930
August 20, 2026	152.88	151.15	151.15	158.3	145.06	12,985
August 19, 2026	158.01	153.64	153.64	159	151.7	4,744
August 18, 2026	156.15	158	158	159.5	155	4,659
August 17, 2026	159.3	155.95	155.95	161.61	155.75	6,260
August 14, 2026	166	161.6	161.6	168.63	159.03	5,121
August 13, 2026	162.44	163.92	163.92	164.76	160	6,462
August 12, 2026	162.06	161.55	161.55	164.99	160	6,645
August 11, 2026	167.2	161.92	161.92	169.9	160.58	7,008
August 10, 2026	157.95	164.52	164.52	167.14	157.95	5,302
August 07, 2026	161.91	158.71	158.71	166.31	158.69	5,810
August 06, 2026	164.16	159.6	159.6	168.11	156.33	5,880
August 05, 2026	169.01	165.69	165.69	173	165.01	7,576
August 04, 2026	163.6	168.05	168.05	170	161.28	7,935
August 03, 2026	162.43	164.01	164.01	168.58	158	9,302
July 31, 2026	155.39	161	161	161.52	149.18	8,966
July 30, 2026	169.08	154.24	154.24	172	152.63	49,626
July 29, 2026	150.4	147.15	147.15	153.41	143.73	9,240
July 28, 2026	149	151.95	151.95	156.96	146.11	4,831
July 27, 2026	153.9	153.01	153.01	156.25	151.89	3,047