A quick note on timing. The figures on this page come from different places and refresh on different clocks. Exchange short interest is reported twice a month, FINRA short volume lands every trading day, SEC fails to deliver arrive about two weeks late, and borrow numbers move throughout the day, so two figures here can carry different as of dates. Anything tagged PREVIEW is sample data while we finish wiring its live feed. Prices are delayed 15 minutes. This page is for education, not investment advice.

Innospec Inc (IOSP) Short Interest, Short Squeeze & Borrow Rates ● LIVE

Innospec Inc · NASDAQ · Basic Materials

$85.64+0.88 (+1.04%)

15-min delayed · Jul 27, 3:45 PM ET · Get real-time quotes →

About 4.16M shares of Innospec Inc are sold short, or roughly 21.69% of the float. At recent volume that works out to about 2.00 days to cover, with a borrow fee near 46.59% and a squeeze score of 30.0 out of 100. No single number tells you whether a squeeze is coming, so it helps to read the whole picture below.

Basic stats

Short Interest

4,155,574 shares

source: NASDAQ / EODHD

Short Interest Ratio

2.00 days to cover

source: NASDAQ / EODHD

Short Interest % Float

21.69%

source: NASDAQ · Capital IQ (float)

Off-Exch. Short Volume

1,637 shares

source: FINRA (inc. dark pool)

Off-Exch. Short Vol %

77.90%

source: FINRA (inc. dark pool)

Introduction

This page gathers everything we track on the short side of Innospec Inc (IOSP) in one place, ordered by how quickly each number changes. The fastest moving figures, like the borrow fee, sit near the top. Daily figures such as short volume and fails to deliver come next. The slowest data, the official short interest that exchanges publish twice a month, sits at the bottom. Reading it top to bottom gives you a feel for what is happening right now versus what has built up over time.

Short squeeze score

Updates intraday

Moderate squeeze risk

IOSP scores 30 out of 100. The biggest factor is borrow fee at 46.6% (high); days to cover of 2.00 is moderate and a borrow fee near 46.6% is high. Short-side pressure is middling and nothing here points to an imminent squeeze.

Short interest % float21.7%Elevated

Days to cover2.00Moderate

Borrow fee46.6%High

A relative reading versus other stocks, not a prediction. It weighs short interest, float, days to cover and the cost to borrow into one 0–100 number where 50 is the middle of the pack.

Low

Moderate

Elevated

High

Extreme

30.00

0 · less crowded50 · average100 · most crowded

Short interest over time

NASDAQ · Capital IQ (float)Updates twice monthlyPREVIEW

Placeholder data, not real IOSP figures. We are still wiring the short interest history feed, so the numbers below are illustrative sample values used to show the layout. Do not rely on them. This section will switch to live data once the feed lands.

Reported short interest for IOSP at each date, shown with days to cover and short interest as a percent of float. Short interest updates twice a month; the percentages are recomputed as float changes.

Date	Short Interest	Days to Cover	SI % Float	Float (MM)	Shares Out (MM)
2026-07-18	4,529,801	2.47	20.53%	19.16	20.78
2026-07-03	3,349,566	2.42	24.62%	19.16	20.78
2026-06-18	3,841,450	2.35	20.33%	19.16	20.78
2026-06-03	4,067,355	2.44	22.84%	19.16	20.78
2026-05-19	4,217,749	2.17	24.59%	19.16	20.78
2026-05-04	4,750,762	2.28	23.21%	19.16	20.78
2026-04-19	3,854,840	2.15	23.47%	19.16	20.78
2026-04-04	3,718,854	2.12	23.17%	19.16	20.78

Short interest (official NASDAQ settlement)

NASDAQUpdates twice monthlyPREVIEW

Placeholder data, not real IOSP figures. We are still wiring the official settlement feed, so the numbers below are illustrative sample values used to show the layout. Do not rely on them. This section will switch to live data once the feed lands.

The raw short interest NASDAQ publishes at each settlement date, with the publication date and the change from the prior period. These are the exchange own figures and are not adjusted for stock splits.

Settlement Date	Publication Date	Short Interest	Percent Change	SI Ratio (DTC)	Float (MM)	SI % Float
2026-07-18	2026-07-28	4,155,574	0.00%	2.48	22.32	18.61
2026-07-03	2026-07-13	4,822,128	-16.04%	3.75	19.70	24.47
2026-06-18	2026-06-28	5,137,557	-6.54%	3.35	21.39	24.02
2026-06-03	2026-06-13	4,915,174	4.33%	3.59	22.51	21.83
2026-05-19	2026-05-29	4,977,771	-1.27%	2.83	20.17	24.68
2026-05-04	2026-05-14	5,649,613	-13.50%	3.53	18.91	29.88
2026-04-19	2026-04-29	5,333,094	5.60%	2.33	22.69	23.51
2026-04-04	2026-04-14	5,716,452	-7.19%	2.18	19.42	29.43
2026-03-20	2026-03-30	4,995,478	12.61%	1.61	20.63	24.21
2026-03-05	2026-03-15	5,454,536	-9.19%	2.78	20.76	26.27
2026-02-18	2026-02-28	4,749,210	12.93%	2.20	22.11	21.48
2026-02-03	2026-02-13	5,172,044	-8.90%	4.22	18.19	28.44

Short sale volume (FINRA)

FINRAUpdates daily at close

How many IOSP shares were sold short off exchange each day, summed across the reporting venues we track. It includes market maker hedging and other routine activity, so a high reading is normal and is not the same as outstanding short interest.

Market Date	Non-Exempt Vol	Exempt Vol	Short Vol	Total Vol	Short Vol Ratio
2026-07-27	1,637	0	1,637	2,101	77.9%
2026-07-24	17,139	3,502	20,641	42,918	48.1%
2026-07-23	46,554	0	46,554	99,917	46.6%
2026-07-22	42,819	0	42,819	80,752	53.0%
2026-07-21	19,291	0	19,291	44,729	43.1%
2026-07-20	39,087	0	39,087	68,388	57.2%
2026-07-17	24,876	0	24,876	42,656	58.3%
2026-07-16	33,279	0	33,279	65,550	50.8%
2026-07-15	34,086	200	34,286	76,105	45.1%
2026-07-14	31,100	0	31,100	65,682	47.3%
2026-07-13	29,986	0	29,986	70,370	42.6%
2026-07-10	23,858	0	23,858	39,642	60.2%
2026-07-09	30,072	0	30,072	56,308	53.4%
2026-07-08	45,976	0	45,976	89,310	51.5%
2026-07-07	51,099	342	51,441	94,412	54.5%
2026-07-06	19,970	0	19,970	40,746	49.0%
2026-07-02	45,924	0	45,924	78,272	58.7%
2026-07-01	58,654	1,134	59,788	92,548	64.6%
2026-06-30	49,768	0	49,768	114,860	43.3%
2026-06-29	58,645	2,976	61,621	108,861	56.6%
2026-06-26	66,328	86	66,414	120,864	54.9%
2026-06-25	75,545	252	75,797	181,839	41.7%
2026-06-24	65,531	194	65,725	135,636	48.5%
2026-06-23	54,635	0	54,635	135,205	40.4%
2026-06-22	48,881	0	48,881	82,277	59.4%
2026-06-18	54,465	0	54,465	94,929	57.4%
2026-06-17	71,069	0	71,069	115,687	61.4%
2026-06-16	53,248	0	53,248	90,468	58.9%
2026-06-15	51,621	0	51,621	103,085	50.1%
2026-06-12	68,876	0	68,876	138,090	49.9%

Short sale volume (combined exchange and off-exchange)

FINRA, PSX/BXUpdates daily at closePREVIEW

Placeholder data, not real IOSP figures. We are still wiring the per-venue combined volume feed, so the numbers below are illustrative sample values used to show the layout. Do not rely on them. This section will switch to live data once the feed lands.

Off-exchange volume combined with the on-exchange venues we track. The aggregate columns cover those venues only, not every place IOSP trades, so treat the totals as a representative sample rather than a full market count.

Market Date	FINRA Short	PSX/BX Short	Aggregate Short	Aggregate Total	Agg Short Ratio
2026-07-28	935,197	11,658	946,855	1,867,500	50.7%
2026-07-27	1,588,625	10,029	1,598,654	3,178,754	50.3%
2026-07-24	1,238,286	7,239	1,245,525	2,404,322	51.8%
2026-07-23	742,633	12,944	755,577	1,510,010	50.0%
2026-07-22	1,334,773	18,913	1,353,686	2,290,645	59.1%
2026-07-21	949,967	18,254	968,221	1,797,060	53.9%
2026-07-20	1,162,493	21,368	1,183,861	2,257,099	52.5%
2026-07-17	1,508,044	24,460	1,532,504	2,541,654	60.3%
2026-07-16	1,158,756	22,527	1,181,283	2,160,410	54.7%
2026-07-15	1,346,504	5,088	1,351,592	2,377,299	56.9%

Fails-to-deliver

SECUpdates twice monthly, delayed

IOSP shares that did not settle on time, reported by the SEC. Each figure is a running balance on a given date rather than a daily tally, and it is not added up across dates. Fails happen for many ordinary reasons and are not on their own a sign of anything improper.

Settlement Date	Price	Quantity	Value
2026-06-25	$83.39	75	$6,254.25
2026-06-18	$83.11	54	$4,487.94
2026-06-15	$86.59	184	$15,932.56
2026-06-11	$83.35	44	$3,667.40
2026-06-09	$81.38	7	$569.66
2026-06-03	$81.65	25	$2,041.25
2026-05-21	$78.66	480	$37,756.80
2026-05-12	$80.82	61	$4,930.02
2026-05-11	$80.55	250	$20,137.50
2026-05-05	$76.48	32	$2,447.36
2026-04-30	$75.61	1	$75.61
2026-04-27	$77.15	10	$771.50
2026-04-21	$75.48	1	$75.48
2026-04-07	$72.24	13	$939.12
2026-04-02	$73.60	693	$51,004.80
2026-04-01	$73.02	114	$8,324.28
2026-03-27	$72.37	56	$4,052.72
2026-03-24	$67.32	1	$67.32
2026-03-23	$65.89	130	$8,565.70
2026-03-20	$67.23	141	$9,479.43
2026-03-12	$69.74	760	$53,002.40
2026-02-25	$79.30	10	$793.00
2026-01-07	$78.61	4	$314.44
2025-12-12	$78.62	78	$6,132.36

Short shares availability

Prime brokerage sampleUpdates intradayPREVIEW

Placeholder data, not real IOSP figures. We are still wiring the share availability feed, so the numbers below are illustrative sample values used to show the layout. Do not rely on them. This section will switch to live data once the feed lands.

How many IOSP shares one large prime broker had available to lend at each timestamp. It is a sample of a single lender, not the total shortable pool and not the short interest, but the direction over a day or two is a useful read on demand. Last update 7 minutes ago.

Time Since Last Change	Timestamp (UTC)	IOSP Short Shares Availability
42 minutes ago	2026-07-28 20:00 UTC	200,000
2 hours ago	2026-07-28 19:07 UTC	150,000
6 hours ago	2026-07-28 15:14 UTC	100,000
6 hours ago	2026-07-28 15:21 UTC	150,000
7 hours ago	2026-07-28 14:28 UTC	200,000
8 hours ago	2026-07-28 13:35 UTC	250,000
11 hours ago	2026-07-28 10:42 UTC	700
15 hours ago	2026-07-28 06:49 UTC	900
17 hours ago	2026-07-28 04:56 UTC	500
20 hours ago	2026-07-28 01:03 UTC	400

Cost to borrow

Lending feedUpdates intraday

The annualized rate a short seller pays to borrow IOSP. The latest reading is 46.59%. A high or rising fee means shares are getting harder and more expensive to short, which is one of the conditions that can feed a squeeze.

Date	Borrow Fee
2026-07-27	46.59%
2026-07-24	45.05%
2026-07-23	44.13%
2026-07-22	43.32%
2026-06-08	55.53%
2026-06-05	53.87%
2026-06-04	50.40%
2026-06-03	46.25%
2026-06-02	42.90%
2026-06-01	39.68%
2026-05-29	39.69%
2026-05-28	39.74%
2026-05-27	39.77%
2026-05-26	39.71%
2026-05-25	39.65%
2026-05-22	39.59%
2026-05-21	39.45%
2026-05-20	39.28%
2026-05-19	39.17%
2026-05-18	39.60%
2026-05-15	39.65%
2026-05-14	39.54%
2026-05-13	39.39%

IOSP short interest FAQ

How much of IOSP is sold short right now?+

About 4,155,574 shares of Innospec Inc are currently sold short, which is roughly 21.69% of the float. At recent trading volume that would take around 2.00 days to buy back. Exchanges publish this figure twice a month, so it moves in steps rather than continuously.

What does the IOSP squeeze score mean?+

It is a single reading from 0 to 100, with 50 as the middle of the pack, that blends short interest, float, days to cover, the borrow fee and a few other signals. IOSP currently sits at 30.00, which we read as moderate squeeze risk. A higher score means a more crowded setup, not a promise that the stock will squeeze.

Is short volume the same as short interest?+

No, and it is a common mix up. Short interest counts open short positions at a settlement date and updates twice a month. Short volume counts shares traded short on a single day and updates daily. A stock can show heavy short volume from routine market making without its open short interest going up at all.

What are fails to deliver?+

They are shares that did not change hands by the settlement date, reported by the SEC on a delay. The number is a running balance on a given date, not a daily count, so you should not add it up across dates. Fails happen for many ordinary reasons and are not on their own a sign of anything improper.

What does the borrow fee tell me?+

It is the yearly rate a short seller pays to borrow the stock, and IOSP is near 46.59% right now. When the fee is high and shares are hard to find, shorting gets expensive and harder to hold, which is one of the ingredients that can feed a squeeze.

How often does this data update?+

It depends on the source. Official short interest lands twice a month, FINRA short volume every trading day, SEC fails to deliver about two weeks late, and borrow figures through the day. Each section on this page shows its own as of date so you can see how fresh it is.

This page is for education and is not investment advice. Short interest, short volume, fails to deliver and borrow figures come from separate reporting systems with different as of dates and methods, and none of them on its own proves any wrongdoing or predicts where the price will go. Numbers can differ from other sites because of how float is measured, when each source reports, which venues are covered, and corporate actions like splits. Always do your own research and talk to a licensed financial advisor before you trade.

Introduction