Current position

Cathie Wood’s Cerus Corp (CERS) position

Reported position history, portfolio importance and verified filing changes from public SEC disclosures.

ARK Investment ManagementVerified through Q2 2026
Relationship snapshot

At a glance

The full verified relationship, including prior ownership episodes and exits where supported.

First reportedQ3 2017Earliest verified positive filing snapshot
Latest statusCurrent positionBased on the latest supported relationship state
Peak shares30.00MHighest verified quarter-end share count
Quarters reported35Verified quarters with shares above zero
What happened?

ARK Investment Management first reported Cerus Corp in Q3 2017. The reported position was increased and reduced across later filings. ARK Investment Management currently reports 17.93M shares. The latest verified filing showed: Sold 6.4% of the position.

Verified SEC history

Position over time

See the same verified relationship through reported shares, portfolio weight or reported value.

Metric

Gaps indicate periods that cannot be safely connected or where a verified corporate action changes the raw share scale. Stock price, when available, is market context and not a transaction price.

Key filing events

What changed

Latest filing plus the most meaningful reported changes. Unchanged quarters are collapsed by default.

Q2 2026
Sold 6.4% of the position−1.23M shares · 17.93M shares remained
Filing context

Quarter-end price $2.92 · Estimated holding basis $4.35

Q1 2026
Bought 5.3% more+960.94K shares · 19.16M shares reported after the change
Filing context

Quarter-end price $1.82 · Estimated holding basis $4.35

Q4 2025
Sold 3.4% of the position−649.98K shares · 18.20M shares remained
Filing context

Quarter-end price $2.06 · Estimated holding basis $4.48

Q3 2025
Sold 1.9% of the position−357.42K shares · 18.85M shares remained
Filing context

Quarter-end price $1.59 · Estimated holding basis $4.48

Q2 2025
Sold 7.0% of the position−1.45M shares · 19.21M shares remained
Filing context

Quarter-end price $1.41 · Estimated holding basis $4.48

Q1 2025
Sold 0.8% of the position−159.61K shares · 20.66M shares remained
Filing context

Quarter-end price $1.39 · Estimated holding basis $4.48

Portfolio importance

How important is Cerus Corp in ARK Investment Management’s reported portfolio?

Relative importance is measured only within the verified primary non-option reported portfolio for each quarter.

Current portfolio weight0.3%Q2 2026
Current rank#58of 190 reported positions
Peak portfolio weight1.6%Q1 2020
Best historical rank#21Q1 2020
At peak importanceQ1 2020
CERS
1.6%
Largest holding
7.8%
SEC evidence & methodology

SEC filing evidence

Market context and filing-derived values are kept separate from actual transaction prices, which 13F filings do not disclose.

Latest verified stock price$2.532026-09-16

Market context only; not an investor transaction price.

Latest filing quarter-end price$2.92Q2 2026

Derived from validated reported value and shares where supported.

Estimated holding basis$4.35Historical reference — not actual purchase price

Calculated from supported filing history.

Latest verified investor filingQ2 2026 · filed 2026-08-14
Open SEC filing ↗

This tracker follows ARK Investment Management’s aggregated Form 13F disclosures. It is not Cathie Wood’s personal brokerage account, and 13F filings do not reveal exact trade dates or execution prices.