Short squeeze is starting in shares of MASI at $163.5, after crossing above the $157.404 Trigger Price

In the past 20 years (since 2005 with the introduction of RegSho), short selling has come under scrutiny as millions of retail investors have discovered what we have been highlighting since early 2005. Market makers abuse the “market maker’s exemption” and short excessive amounts of shares in your stock without locating, borrowing, paying the rebate or the interest rate to borrow. They are required to cover on the same trading day, and our data proves they do not.

The chart below shows “Daily Short Volume” in Masimo Corporation (MASI), and includes both EXEMPT (market makers) and NON-EXEMPT (everyone else) short sales. We consolidate the tape of all 14 US stock exchanges and purchase the “sell short” trade identifier data directly from the exchanges on a daily basis. This complete view of the trading in your stock shows a vastly different picture than “Total Short Interest”, which only includes non-exempt short sales that have not been covered by the twice per month reporting date. Unfortunately, this misses the majority of the short selling.

This indicates that a Short Squeeze may be starting in shares of Masimo Corporation at $163.5, after crossing above the $157.404 Trigger Price. This could signal a buying opportunity, given the right market conditions.

You can find the full report at [ https://www.woprai.com/ ]

Please find the applicable data below, drawn from all major market providers.

Date	Short Volume	Total Volume	Percentage	Squeeze Trigger	$ Value
2025-04-22	141,685	470,962	30.08	151.92	21,524,785
2025-04-21	131,536	342,837	38.37	148.27	19,502,843
2025-04-17	150,107	457,042	32.84	151.99	22,814,763
2025-04-16	116,951	347,708	33.63	151.7	17,741,467
2025-04-15	134,745	315,179	42.75	152.57	20,558,045
2025-04-14	245,390	720,758	34.05	153.81	37,743,436
2025-04-11	330,355	728,731	45.33	153.5	50,709,493
2025-04-10	504,331	1,091,972	46.19	152.9	77,112,210
2025-04-09	760,852	1,454,739	52.3	157.31	119,689,628
2025-04-08	402,971	717,035	56.2	150.91	60,812,354
2025-04-07	530,165	1,111,119	47.71	147.41	78,151,623
2025-04-04	338,699	1,158,810	29.23	144.93	49,087,646
2025-04-03	390,172	980,940	39.78	155.05	60,496,169
2025-04-02	159,722	350,636	45.55	170.25	27,192,671
2025-04-01	203,905	363,109	56.16	167.19	34,090,877
2025-03-31	216,348	444,109	48.72	164.97	35,690,930
2025-03-28	232,947	594,344	39.19	164.4	38,296,487
2025-03-27	188,731	404,263	46.69	167.88	31,684,160
2025-03-26	141,306	304,108	46.47	167.05	23,605,167
2025-03-25	226,489	476,739	47.51	169.16	38,312,879
2025-03-24	157,939	519,128	30.42	167.72	26,489,529
2025-03-21	352,342	693,389	50.81	165.95	58,471,155
2025-03-20	185,107	386,351	47.91	170.99	31,651,446
2025-03-19	336,826	553,932	60.81	172.44	58,082,275
2025-03-18	197,430	370,082	53.35	168.86	33,338,030
2025-03-17	217,031	453,430	47.86	172.07	37,344,524
2025-03-14	222,830	466,858	47.73	169	37,658,270
2025-03-13	228,942	442,137	51.78	164.98	37,770,851
2025-03-12	347,851	902,742	38.53	167.31	58,198,951
2025-03-11	282,371	700,067	40.33	166.78	47,093,835
2025-03-10	310,470	804,479	38.59	167.47	51,994,411
2025-03-07	313,316	630,743	49.67	173.98	54,510,718
2025-03-06	217,100	497,909	43.6	177.05	38,437,555
2025-03-05	211,913	378,138	56.04	185.27	39,261,122
2025-03-04	335,070	608,508	55.06	181.58	60,842,011
2025-03-03	421,001	886,493	47.49	191.27	80,524,861
2025-02-28	360,440	698,035	51.64	187.25	67,492,390

Total	272,501,813	724,299,019	37.62	157.36	42,882,057,520

* Totals include all data records back to 2020-04-24 00:00:00, data set is truncated for viewing.

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Short squeeze is starting in shares of MASI at $163.5, after crossing above the $157.404 Trigger Price