HFT Solutions LLC

HFT Solutions LLC is a non-practicing entity (NPE) and a wholly-owned subsidiary of publicly traded Network-1 Technologies, Inc. (NYSE American: NTIP), a company specializing in intellectual property acquisition, development, licensing, and monetization. HFT Solutions LLC was formed in Delaware on March 17, 2022. While its parent company, Network-1 Technologies, Inc., is headquartered in New Canaan, CT, the specific headquarters for HFT Solutions LLC is not publicly detailed.

HFT Solutions LLC operates by acquiring and asserting patent portfolios. Its core business revolves around the "HFT Patent Portfolio," which was acquired in March 2022. This portfolio covers advanced technologies related to high-frequency trading, specifically addressing issues of speed and latency in trading systems through the use of field-programmable gate array (FPGA) hardware, including clock domain management technology. The company offers this patent portfolio for licensing to firms engaged in low-latency high-frequency trading activities.

HFT Solutions LLC maintains an active patent assertion posture, with three tracked cases as plaintiff and one as defendant (a counterclaim). Its litigation efforts primarily involve asserting its HFT Patent Portfolio against companies operating in high-frequency trading. Cases have been filed in the U.S. District Court for the Western District of Texas and the U.S. District Court for the Northern District of Illinois.

Notable cases include those initiated in December 2024 against Citadel Securities LLC and Jump Trading LLC in the Northern District of Illinois. In response to HFT Solutions' suit, Citadel Securities LLC filed a counterclaim in January 2026, seeking a declaratory judgment of patent invalidity and non-infringement, and also launched a Patent Trial and Appeal Board (PTAB) proceeding. In December 2025, a motion by Citadel to dismiss the case under Alice was denied, with the court finding the asserted FPGA-based claims plausibly recite a specific technological improvement. HFT Solutions also filed a lawsuit against Optiver US LLC in the Western District of Texas in September 2025. The asserted patents, such as U.S. Patent Nos. 10,931,286, 11,128,305, and 11,575,381, relate to FPGA systems with external phase-locked loops for minimizing latency in data processing.