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Spero Therapeutics Ownership | Who Owns Spero Therapeutics?

OverviewForecastRevenueFinancialsChartTranscripts

Spero Therapeutics Ownership Summary

Spero Therapeutics is owned by 3.91% institutional investors, 24.32% insiders, and 71.77% retail investors. Anson funds management lp is the largest institutional shareholder, holding 7.09% of SPRO shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 2.09% of its assets in Spero Therapeutics shares.

SPRO Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockSpero Therapeutics3.91%24.32%71.77%
SectorHealthcare Stocks 279.19%10.62%-189.81%
IndustryBiotech Stocks 63.96%10.74%25.30%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Anson funds management lp3.84M7.09%$3.96M
Pfizer2.36M4.36%$2.43M
Vanguard group1.76M3.26%$1.82M
Renaissance1.11M2.04%$1.14M
Acadian asset management1.04M1.92%$1.07M
Alphabet889.98K1.64%$916.68K
Murchinson873.91K1.62%$629.22K
Adar1 capital management801.28K1.48%$576.92K
Blackrock483.40K0.90%$628.42K
Blackrock funding, inc. /de485.35K0.90%$499.91K

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Anson funds management lp3.84M0.40%$3.96M
Adar1 capital management801.28K0.11%$576.92K
Pfizer2.36M0.09%$2.43M
Awm investment company333.40K0.06%$433.42K
Alphabet889.98K0.05%$916.68K
Atlas venture life science advisors305.25K0.04%$314.41K
Murchinson873.91K0.03%$629.22K
Dafna capital management125.00K0.03%$90.00K
Dlk investment management28.95K0.01%$29.82K
Bridgeway capital management184.80K0.00%$190.34K

Top Buyers

HolderShares% AssetsChange
Pfizer2.36M0.09%2.36M
Mackenzie financial187.56K0.00%155.66K
Renaissance1.11M0.00%130.94K
Anson funds management lp3.84M0.40%89.44K
Jpmorgan chase61.62K-61.39K

Top Sellers

HolderShares% AssetsChange
Novo---468.90K
Atlas venture life science advisors305.25K0.04%-97.63K
Bank of montreal /can/---79.50K
Two sigma securities---67.73K
Bailard---60.90K

New Positions

HolderShares% AssetsChangeValue
Pfizer2.36M0.09%2.36M$2.43M
Squarepoint ops55.05K0.00%55.05K$56.70K
Prudential financial49.20K0.00%49.20K$50.68K
Royal bank of canada1.96K-1.96K$3.00K
Citadel advisors500.00-500.00$650.00

Sold Out

HolderChange
Qube research-1.00
Federation des caisses desjardins du quebec-30.00
Pfs partners-50.00
Northwestern mutual wealth management-50.00
Richards, merrill & peterson-150.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Mar 31, 20254-92.31%2,111,095-86.54%30.47%--100.00%--100.00%
Dec 31, 20245210.64%15,679,98527.34%285.60%26160.00%9-25.00%
Sep 30, 202447-4.08%12,313,754-11.17%223.39%10-41.18%1250.00%
Jun 30, 202449-9.26%13,861,9790.87%253.81%17-29.17%8-33.33%
Mar 31, 20245412.50%13,742,012-0.56%263.79%2471.43%1220.00%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
Vanguard US Total Market Shares ETF1.17M2.09%-
Vanguard Total Stock Mkt Idx Inv1.17M2.09%-
Vanguard Institutional Extnd Mkt Idx Tr587.34K1.05%-
Fidelity Extended Market Index241.46K0.43%-681.00
Fidelity Total Market Index108.99K0.20%41.10K
Bridgeway Ultra-Small Company Market104.80K0.19%-30.00K
iShares Micro-Cap ETF87.05K0.16%-
Mackenzie US Small Cap A65.79K0.12%-
BlackRock Extended Equity Market K60.57K0.11%-26.00
Extended Equity Market Fund K59.93K0.11%184.00

Recent Insider Transactions

DateNameRoleActivityValue
Feb 05, 2025Keutzer Timothy Chief Operating OfficerSell$19.44K
Feb 05, 2025Keutzer Timothy Chief Operating OfficerSell$3.10K
Feb 05, 2025Keutzer Timothy Chief Operating OfficerSell$21.56K
Feb 05, 2025Rajavelu Esther CFO & CBOSell$16.14K
Feb 05, 2025Shukla Sath CEO & PresidentSell$4.79K

Insider Transactions Trends

DateBuySell
2025 Q1-9
2024 Q4-2
2024 Q3-5
2024 Q2--
2024 Q1-6

SPRO Ownership FAQ

Who Owns Spero Therapeutics?

Spero Therapeutics shareholders are primarily institutional investors at 3.91%, followed by 24.32% insiders and 71.77% retail investors. The average institutional ownership in Spero Therapeutics's industry, Biotech Stocks , is 63.96%, which Spero Therapeutics falls below.

Who owns the most shares of Spero Therapeutics?

Spero Therapeutics’s largest shareholders are Anson funds management lp (3.84M shares, 7.09%), Pfizer (2.36M shares, 4.36%), and Vanguard group (1.76M shares, 3.26%). Together, they hold 14.72% of Spero Therapeutics’s total shares outstanding.

Does Blackrock own Spero Therapeutics?

Yes, BlackRock owns 0.90% of Spero Therapeutics, totaling 483.4K shares as of Jun 2024. This represents 0% of BlackRock's total assets, with a market value of 628.42K$. In the last quarter, BlackRock increased its holdings by 6.51K shares, a 1.36% change.

Who is Spero Therapeutics’s biggest shareholder by percentage of total assets invested?

Anson funds management lp is Spero Therapeutics’s biggest shareholder by percentage of total assets invested, with 0.40% of its assets in 3.84M Spero Therapeutics shares, valued at 3.96M$.

Who is the top mutual fund holder of Spero Therapeutics shares?

Vanguard US Total Market Shares ETF is the top mutual fund holder of Spero Therapeutics shares, with 2.09% of its total shares outstanding invested in 1.17M Spero Therapeutics shares.

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