
In a noteworthy development in the ongoing legal battle involving Northwest Biotherapeutics, Inc. (“NWBO”), the Court has denied a motion by the defendants, which include Citadel and six other brokers, to dismiss the case based on allegations of market manipulation through a practice known as “spoofing.”
This ruling reflects a significant victory for the plaintiff as it allows certain allegations to proceed in court while highlighting the complexities involved in high-frequency trading and its impact on small publicly traded companies.
Background of the Case
NWBO, a publicly traded biotechnology firm, alleges that over a period of five years, seven registered broker-dealers employed high-speed trading algorithms to manipulate the market for its shares.
According to the complaint, these defendants engaged in spoofing, a tactic that involves submitting falsified sale orders to create an illusion of market activity, thereby driving down the price of NWBO stock.
The practice consisted of three key steps: placing large quantities of sell orders (known as “Baiting Orders”) that were never intended to be executed, subsequently buying the stock at artificially low prices, and finally canceling the sell orders before they were executed.
As a result of this alleged manipulation, NWBO claims it made multiple sales of its stock at deflated prices, leading to significant financial losses.
The Court’s Ruling
In a comprehensive Report and Recommendation (R&R) issued by Magistrate Judge Gary Stein, the court concluded that NWBO has sufficiently pleaded loss causation for some of its claims while denying that it has done so for others.
The court agreed with the R&R’s assertion that NWBO’s stock price was indeed affected by the defendants’ spoofing activities, particularly during the final hour of trading on certain days.
Specifically, the court upheld NWBO’s claims regarding 67 transactions in which shares were sold at prices tied to the company’s closing prices on days when spoofing occurred during the last hour of trading.
These transactions represented approximately 22.5 million shares.
Moreover, the court supported NWBO’s second theory of loss causation, which maintained that the impacts of the spoofing activities persisted throughout the trading day on certain occasions, allowing another 27 transactions to proceed.
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Limitations on the Ruling
However, the court did place limitations on the claims.
It found that NWBO failed to demonstrate a lasting, long-term impact of spoofing on its stock price for other transactions not tied to specific spoofing incidents.
This aspect of the ruling underscores the ongoing challenges faced by plaintiffs in proving damages related to market manipulation, particularly in demonstrating that the effects of the defendants’ behavior were not transient, per the court.
The court also dismissed arguments made by the defendants that NWBO’s allegations about loss causation somehow contradicted other claims in the case.
This reaffirms the legal principle that claims can coexist even if they outline different aspects of the defendants’ alleged wrongdoing.
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Implications for Market Regulation

The ruling is particularly significant in the context of ongoing discussions around the regulatory landscape governing high-frequency trading and market manipulation.
As financial markets continue to evolve with advancements in technology, cases like NWBO’s bring to light critical questions about fairness, transparency, and accountability in trading practices.
The case sets a precedent that signals to market participants and regulators alike that allegations of spoofing and market manipulation will face scrutiny in court, particularly when backed by credible evidence.
This ruling could also bolster efforts toward greater regulatory oversight of high-frequency trading activities, which have come under increasing scrutiny in recent years.
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Why this matters
As the NWBO case progresses, the recent ruling on Citadel’s motion to dismiss represents a crucial moment for the plaintiff in its fight against market manipulation.
While some claims have been allowed to move forward, the court’s limitations on certain aspects of the case remind us of the complexities inherent in proving loss causation in the context of modern trading.
This case not only impacts NWBO but also carries broader implications for the ongoing dialogue about the integrity of financial markets and the practices that govern them.
The outcome of this case will be closely watched by investors, industry experts, and regulators as it unfolds.
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