Short squeeze is starting in shares of MASI at $156.49, after crossing above the $155.561 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 $156.49, after crossing above the $155.561 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
2025-05-28	297,199	569,381	52.2	155.78	46,297,660
2025-05-27	346,931	690,598	50.24	156.32	54,232,254
2025-05-23	154,380	310,177	49.77	149.7	23,110,686
2025-05-22	299,197	506,566	59.06	149.75	44,804,751
2025-05-21	355,144	811,154	43.78	150.83	53,566,370
2025-05-20	280,402	517,156	54.22	155.56	43,619,335
2025-05-19	233,029	446,997	52.13	154.34	35,965,696
2025-05-16	291,442	537,620	54.21	154.85	45,129,794
2025-05-15	336,802	745,264	45.19	154.15	51,918,028
2025-05-14	544,529	1,046,278	52.04	153.83	83,764,896
2025-05-13	236,263	529,859	44.59	162.96	38,501,418
2025-05-12	265,273	614,498	43.17	163.44	43,356,219
2025-05-09	998,692	1,594,610	62.63	156.96	156,754,696
2025-05-08	408,098	905,897	45.05	155.34	63,393,943
2025-05-07	904,066	1,804,124	50.11	150.35	135,926,323
2025-05-06	325,685	854,006	38.14	161.47	52,588,357
2025-05-05	242,633	519,353	46.72	162.57	39,444,847
2025-05-02	234,960	511,617	45.92	166.64	39,153,734
2025-05-01	153,958	385,252	39.96	163.16	25,119,787
2025-04-30	138,300	347,321	39.82	160.51	22,198,533
2025-04-29	124,848	336,869	37.06	163.26	20,382,684
2025-04-28	161,153	349,663	46.09	163.41	26,334,012
2025-04-25	122,509	324,238	37.78	163.21	19,994,694
2025-04-24	320,166	669,935	47.79	162	51,866,892
2025-04-23	276,314	464,623	59.47	160.24	44,276,555
2025-04-22	141,685	470,962	30.08	151.92	21,524,785
2025-04-21	131,596	342,837	38.38	148.27	19,511,739
2025-04-17	150,107	457,042	32.84	151.99	22,814,763
2025-04-16	117,196	347,708	33.71	151.7	17,778,633
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	330,832	728,731	45.4	153.5	50,782,712
2025-04-10	505,672	1,091,972	46.31	152.9	77,317,249
2025-04-09	762,161	1,454,739	52.39	157.31	119,895,547
2025-04-08	402,971	717,035	56.2	150.91	60,812,354
2025-04-07	530,765	1,111,119	47.77	147.41	78,240,069
2025-04-04	338,699	1,158,810	29.23	144.93	49,087,646

Total	273,103,108	721,020,255	37.88	155.23	42,393,739,627

* Totals include all data records back to 2020-06-08 00:00:00, data set is truncated for viewing.

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Short squeeze is starting in shares of MASI at $156.49, after crossing above the $155.561 Trigger Price