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.

Spok Holdings Inc (SPOK) Short Interest, Short Squeeze & Borrow Rates ● LIVE

Spok Holdings Inc · NASDAQ · Healthcare

$10.90+0.09 (+0.83%)

15-min delayed · Jul 28, 3:45 PM ET · Get real-time quotes →

About 5.70M shares of Spok Holdings Inc are sold short, or roughly 2.52% of the float. At recent volume that works out to about 3.80 days to cover, with a borrow fee near 35.94% and a squeeze score of 29.0 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

5,696,826 shares

source: NASDAQ / EODHD

Short Interest Ratio

3.80 days to cover

source: NASDAQ / EODHD

Short Interest % Float

2.52%

source: NASDAQ · Capital IQ (float)

Off-Exch. Short Volume

1,361 shares

source: FINRA (inc. dark pool)

Off-Exch. Short Vol %

82.60%

source: FINRA (inc. dark pool)

Introduction

This page gathers everything we track on the short side of Spok Holdings Inc (SPOK) 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

SPOK scores 29 out of 100. The biggest factor is borrow fee at 35.9% (elevated); days to cover of 3.80 is moderate and a borrow fee near 35.9% is elevated. Short-side pressure is middling and nothing here points to an imminent squeeze.

Short interest % float2.5%Low

Days to cover3.80Moderate

Borrow fee35.9%Elevated

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

29.00

0 · less crowded50 · average100 · most crowded

Short interest over time

NASDAQ · Capital IQ (float)Updates twice monthly

Reported short interest for SPOK 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)
2026-05-17	—	—	2.52%	18.11	20.89
2026-05-16	—	—	2.52%	18.11	20.89
2026-05-15	—	—	2.52%	18.11	20.89
2026-05-14	—	—	2.52%	18.11	20.89

Short interest (official NASDAQ settlement)

NASDAQUpdates twice monthlyPREVIEW

Placeholder data, not real SPOK 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
2026-07-19	2026-07-29	5,696,826	0.00%	6.63	20.79	27.40
2026-07-04	2026-07-14	5,434,874	4.60%	7.03	16.66	32.61
2026-06-19	2026-06-29	6,191,256	-13.92%	4.14	20.20	30.65
2026-06-04	2026-06-14	5,830,762	5.82%	3.61	16.65	35.01
2026-05-20	2026-05-30	6,527,922	-11.96%	4.20	16.43	39.73
2026-05-05	2026-05-15	7,194,123	-10.21%	7.48	18.54	38.80
2026-04-20	2026-04-30	7,000,453	2.69%	7.42	18.24	38.38
2026-04-05	2026-04-15	7,023,264	-0.33%	4.03	19.39	36.22
2026-03-21	2026-03-31	7,864,459	-11.98%	5.20	20.79	37.83
2026-03-06	2026-03-16	6,926,027	11.93%	6.59	20.69	33.47
2026-02-19	2026-03-01	7,236,714	-4.49%	8.17	17.89	40.45
2026-02-04	2026-02-14	7,077,470	2.20%	5.57	20.50	34.53

Short sale volume (FINRA)

FINRAUpdates daily at close

How many SPOK 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	1,361	0	1,361	1,648	82.6%
2026-07-24	22,482	0	22,482	47,180	47.7%
2026-07-23	81,590	0	81,590	117,191	69.6%
2026-07-22	63,862	0	63,862	95,282	67.0%
2026-07-21	29,375	215	29,590	53,662	55.1%
2026-07-20	47,730	0	47,730	89,570	53.3%
2026-07-17	20,958	0	20,958	40,673	51.5%
2026-07-16	60,378	0	60,378	175,229	34.5%
2026-07-15	49,756	0	49,756	105,011	47.4%
2026-07-14	49,882	0	49,882	90,557	55.1%
2026-07-13	40,174	0	40,174	133,424	30.1%
2026-07-10	27,311	0	27,311	73,199	37.3%
2026-07-09	22,835	0	22,835	54,279	42.1%
2026-07-08	38,560	0	38,560	79,760	48.3%
2026-07-07	43,505	0	43,505	96,271	45.2%
2026-07-06	24,837	29	24,866	52,744	47.1%
2026-07-02	50,967	600	51,567	94,916	54.3%
2026-07-01	64,280	0	64,280	130,049	49.4%
2026-06-30	82,311	2	82,313	139,517	59.0%
2026-06-29	63,849	13,200	77,049	186,657	41.3%
2026-06-26	48,298	82	48,380	118,223	40.9%
2026-06-25	48,441	0	48,441	90,592	53.5%
2026-06-24	65,008	0	65,008	113,538	57.3%
2026-06-23	78,310	346	78,656	131,137	60.0%
2026-06-22	70,183	0	70,183	158,384	44.3%
2026-06-18	64,277	0	64,277	162,219	39.6%
2026-06-17	42,838	24	42,862	94,238	45.5%
2026-06-16	70,748	0	70,748	162,024	43.7%
2026-06-15	55,941	202	56,143	103,434	54.3%
2026-06-12	32,340	0	32,340	65,593	49.3%

Short sale volume (combined exchange and off-exchange)

FINRA, PSX/BXUpdates daily at closePREVIEW

Placeholder data, not real SPOK 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 SPOK 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
2026-07-29	827,348	3,390	830,738	1,402,164	59.2%
2026-07-28	763,403	13,581	776,984	1,297,506	59.9%
2026-07-27	1,244,429	14,192	1,258,621	2,398,090	52.5%
2026-07-24	805,507	11,138	816,645	1,410,429	57.9%
2026-07-23	1,036,591	20,002	1,056,593	1,715,527	61.6%
2026-07-22	845,643	630	846,273	1,598,413	52.9%
2026-07-21	696,793	8,876	705,669	1,372,801	51.4%
2026-07-20	1,195,305	12,385	1,207,690	1,969,747	61.3%
2026-07-17	880,889	13,588	894,477	1,508,336	59.3%
2026-07-16	544,398	3,177	547,575	914,253	59.9%

Fails-to-deliver

SECUpdates twice monthly, delayed

SPOK 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
2026-06-17	$10.48	2,514	$26,346.72
2026-05-26	$10.96	1,087	$11,913.52
2026-05-12	$10.66	431	$4,594.46
2026-04-30	$11.05	156	$1,723.80
2026-04-23	$11.32	244	$2,762.08
2026-04-22	$11.24	837	$9,407.88
2026-04-20	$11.50	4	$46.00
2026-04-10	$11.29	168	$1,896.72
2026-04-07	$11.10	175	$1,942.50
2026-04-01	$10.90	322	$3,509.80
2026-03-25	$11.27	2,503	$28,208.81
2026-03-09	$12.54	117	$1,467.18
2026-03-06	$12.41	235	$2,916.35
2026-03-03	$12.11	563	$6,817.93
2026-03-02	$12.14	324	$3,933.36
2026-02-05	$13.50	29	$391.50
2026-01-05	$13.00	7	$91.00
2025-12-10	$13.18	407	$5,364.26
2025-11-28	$13.30	2,323	$30,895.90
2025-11-20	$12.56	796	$9,997.76
2025-11-18	$13.37	856	$11,444.72
2025-11-06	$13.68	1,097	$15,006.96
2025-11-03	$14.29	743	$10,617.47
2025-10-09	$15.91	358	$5,695.78

Short shares availability

Prime brokerage sampleUpdates intradayPREVIEW

Placeholder data, not real SPOK 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 SPOK 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)	SPOK Short Shares Availability
42 minutes ago	2026-07-28 23:00 UTC	200,000
2 hours ago	2026-07-28 22:07 UTC	150,000
6 hours ago	2026-07-28 18:14 UTC	100,000
6 hours ago	2026-07-28 18:21 UTC	150,000
7 hours ago	2026-07-28 17:28 UTC	200,000
8 hours ago	2026-07-28 16:35 UTC	250,000
11 hours ago	2026-07-28 13:42 UTC	700
15 hours ago	2026-07-28 09:49 UTC	900
17 hours ago	2026-07-28 07:56 UTC	500
20 hours ago	2026-07-28 04:03 UTC	400

Cost to borrow

Lending feedUpdates intraday

The annualized rate a short seller pays to borrow SPOK. The latest reading is 35.94%. 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
2026-07-28	35.94%
2026-07-27	35.40%
2026-07-24	33.75%
2026-07-23	32.88%
2026-07-22	31.90%
2026-06-08	74.73%
2026-06-05	77.60%
2026-06-04	79.54%
2026-06-03	81.90%
2026-06-02	83.93%
2026-06-01	85.87%
2026-05-29	87.59%
2026-05-28	88.36%
2026-05-27	89.19%
2026-05-26	89.98%
2026-05-25	90.67%
2026-05-22	90.79%
2026-05-21	90.92%
2026-05-20	91.08%
2026-05-19	91.18%
2026-05-18	90.88%
2026-05-15	89.46%
2026-05-14	87.86%
2026-05-13	86.05%

SPOK short interest FAQ

How much of SPOK is sold short right now?+

About 5,696,826 shares of Spok Holdings Inc are currently sold short, which is roughly 2.52% of the float. At recent trading volume that would take around 3.80 days to buy back. Exchanges publish this figure twice a month, so it moves in steps rather than continuously.

What does the SPOK 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. SPOK currently sits at 29.00, 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 SPOK is near 35.94% 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