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Spero Therapeutics (SPRO)

(Delayed Data from NSDQ)

$2.28 USD

2.28
7,179,830

+0.17 (8.06%)

Updated Jun 18, 2026 04:00 PM ET

After-Market: $2.26 -0.02 (-0.88%) 7:58 PM ET

Zacks Rank:

This is our short term rating system that serves as a timeliness indicator for stocks over the next 1 to 3 months. How good is it? See rankings and related performance below.

Zacks Rank Definition Annualized Return
1Strong Buy24.00%
2Buy18.14%
3Hold10.18%
4Sell5.72%
5Strong Sell3.11%
S&P50011.49%

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Style Scores:

The Style Scores are a complementary set of indicators to use alongside the Zacks Rank. It allows the user to better focus on the stocks that are the best fit for his or her personal trading style.

The scores are based on the trading styles of Value, Growth, and Momentum. There's also a VGM Score ('V' for Value, 'G' for Growth and 'M' for Momentum), which combines the weighted average of the individual style scores into one score.

  • Value Score A
  • Growth Score A
  • Momentum Score A
  • VGM Score A

Within each Score, stocks are graded into five groups: A, B, C, D and F. As you might remember from your school days, an A, is better than a B; a B is better than a C; a C is better than a D; and a D is better than an F.

As an investor, you want to buy stocks with the highest probability of success. That means you want to buy stocks with a Zacks Rank #1 or #2, Strong Buy or Buy, which also has a Score of an A or a B in your personal trading style.

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A Value A Growth F Momentum A VGM

Industry Rank:

The Zacks Industry Rank assigns a rating to each of the 265 X (Expanded) Industries based on their average Zacks Rank.

An industry with a larger percentage of Zacks Rank #1's and #2's will have a better average Zacks Rank than one with a larger percentage of Zacks Rank #4's and #5's.

The industry with the best average Zacks Rank would be considered the top industry (1 out of 265), which would place it in the top 1% of Zacks Ranked Industries. The industry with the worst average Zacks Rank (265 out of 265) would place in the bottom 1%.

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Zacks Industry Rank Education -- Learn more about the Zacks Industry Rank

Bottom 40% (149 out of 247)

Industry: Medical - Biomedical and Genetics

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Zacks News

Zacks Equity Research

Spero Therapeutics, Inc. (SPRO) May Report Negative Earnings: Know the Trend Ahead of Q2 Release

by Zacks Equity Research

Spero Therapeutics, Inc. (SPRO) doesn't possess the right combination of the two key ingredients for a likely earnings beat in its upcoming report. Get prepared with the key expectations.

Zacks Equity Research

Biotech Stock Roundup: ALEC Surges on Deal With GSK, CVAC Down on Study Results & More

by Zacks Equity Research

The biotech sector was in focus last week on the collaboration news from Alector (ALEC) and pipeline updates from CureVac (CVAC).

Zacks Equity Research

Spero Therapeutics, Inc. (SPRO) Reports Q1 Loss, Tops Revenue Estimates

by Zacks Equity Research

Spero Therapeutics, Inc. (SPRO) delivered earnings and revenue surprises of -8.20% and 169.17%, respectively, for the quarter ended March 2021. Do the numbers hold clues to what lies ahead for the stock?

Zacks Equity Research

Spero Therapeutics, Inc. (SPRO) Reports Q4 Loss, Lags Revenue Estimates

by Zacks Equity Research

Spero Therapeutics, Inc. (SPRO) delivered earnings and revenue surprises of 11.69% and -41.32%, respectively, for the quarter ended December 2020. Do the numbers hold clues to what lies ahead for the stock?

Zacks Equity Research

Will Spero Therapeutics, Inc. (SPRO) Report Negative Q4 Earnings? What You Should Know

by Zacks Equity Research

Spero Therapeutics, Inc. (SPRO) doesn't possess the right combination of the two key ingredients for a likely earnings beat in its upcoming report. Get prepared with the key expectations.

Zacks Equity Research

Spero Therapeutics (SPRO) Sees Hammer Chart Pattern: Time to Buy?

by Zacks Equity Research

Spero Therapeutics (SPRO) has been struggling lately, but the selling pressure may be coming to an end soon.

Zacks Equity Research

Spero Therapeutics (SPRO) Catches Eye: Stock Jumps 7%

by Zacks Equity Research

Spero Therapeutics (SPRO) saw a big move last session, as its shares jumped 7% on the day, amid huge volumes.

Zacks Equity Research

Spero Therapeutics, Inc. (SPRO) Reports Q2 Loss, Lags Revenue Estimates

by Zacks Equity Research

Spero Therapeutics, Inc. (SPRO) delivered earnings and revenue surprises of 27.35% and -41.46%, respectively, for the quarter ended June 2020. Do the numbers hold clues to what lies ahead for the stock?

Zacks Equity Research

Analysts Estimate Spero Therapeutics, Inc. (SPRO) to Report a Decline in Earnings: What to Look Out for

by Zacks Equity Research

Spero Therapeutics, Inc. (SPRO) doesn't possess the right combination of the two key ingredients for a likely earnings beat in its upcoming report. Get prepared with the key expectations.

Zacks Equity Research

Spero Therapeutics, Inc. (SPRO) Shares March Higher, Can It Continue?

by Zacks Equity Research

As of late, it has definitely been a great time to be an investor in Spero Therapeutics, Inc. (SPRO).