Penumbra, Inc. (PEN) Faces Potential Short Squeeze

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 Penumbra, Inc. (PEN), 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 Penumbra, Inc. at $233.01, after crossing above the $230.99 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
2025-07-24	163,749	349,614	46.84	230.44	37,734,320
2025-07-23	190,413	567,311	33.56	233.46	44,453,819
2025-07-22	182,744	618,694	29.54	231.94	42,385,643
2025-07-21	222,149	665,422	33.38	228.77	50,821,027
2025-07-18	199,705	404,060	49.42	230.26	45,984,073
2025-07-17	210,947	550,256	38.34	230.81	48,688,677
2025-07-16	230,059	533,235	43.14	234.72	53,999,448
2025-07-15	254,355	837,059	30.39	236.72	60,210,916
2025-07-14	141,080	487,456	28.94	238.72	33,678,618
2025-07-11	182,480	461,604	39.53	238.09	43,446,663
2025-07-10	109,160	358,956	30.41	244.23	26,660,147
2025-07-09	184,715	540,584	34.17	243.94	45,059,377
2025-07-08	124,431	270,540	45.99	248.03	30,862,621
2025-07-07	109,595	413,934	26.48	248.57	27,242,029
2025-07-03	70,862	233,839	30.3	250.68	17,763,686
2025-07-02	165,277	481,189	34.35	250.29	41,367,180
2025-07-01	220,292	518,826	42.46	251.25	55,348,365
2025-06-30	112,408	363,299	30.94	256.31	28,811,294
2025-06-27	256,786	960,006	26.75	256.11	65,765,462
2025-06-26	87,614	295,032	29.7	253.4	22,201,388
2025-06-25	77,164	247,976	31.12	253.27	19,543,326
2025-06-24	237,764	421,151	56.46	255.44	60,734,436
2025-06-23	315,535	916,010	34.45	253.9	80,114,337
2025-06-20	308,723	1,694,119	18.22	257.06	79,360,334
2025-06-18	160,967	320,089	50.29	257.05	41,376,567
2025-06-17	145,870	458,859	31.79	255.88	37,325,216
2025-06-16	399,281	1,228,719	32.5	261.47	104,400,003
2025-06-13	141,382	367,891	38.43	256.59	36,277,207
2025-06-12	95,598	260,516	36.7	252.74	24,161,439
2025-06-11	108,391	377,737	28.69	253.4	27,466,279
2025-06-10	156,000	453,934	34.37	256.39	39,996,840
2025-06-09	200,461	560,315	35.78	254.61	51,039,375
2025-06-06	165,317	440,171	37.56	258.95	42,808,837
2025-06-05	146,254	466,718	31.34	257.87	37,714,519
2025-06-04	180,936	573,890	31.53	255.8	46,283,429
2025-06-03	214,729	728,563	29.47	256.82	55,146,702
2025-06-02	294,285	840,579	35.01	257.52	75,784,273

Total	186,321,043	503,290,016	37.02	230.99	43,038,210,274

* Totals include all data records back to 2020-07-27 00:00:00, data set is truncated for viewing.