Ray Dalio’s Ciena (CIEN) position
Reported position history, portfolio importance and verified filing changes from public SEC disclosures.
At a glance
The full verified relationship, including prior ownership episodes and exits where supported.
Bridgewater Associates, LP first reported Ciena in Q1 2007. After an earlier exit, the position later appeared again in a verified filing. The reported position was increased and reduced across later filings. Bridgewater Associates, LP currently reports 101.04K shares. The latest verified filing showed: Sold 29.8% of the position.
Position over time
See the same verified relationship through reported shares, portfolio weight or reported value.
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.
What changed
Latest filing plus the most meaningful reported changes. Unchanged quarters are collapsed by default.
Filing context
Quarter-end price $490.56 · Estimated holding basis $152.29
Filing context
Quarter-end price $388.23 · Estimated holding basis $152.29
Filing context
Quarter-end price $233.87 · Estimated holding basis $152.29
Filing context
Quarter-end price $145.67 · Estimated holding basis $126.59
Filing context
Quarter-end price $81.33 · Estimated holding basis $81.33
Filing context
Quarter-end price $56.84 · Estimated holding basis $56.84
Filing context
Quarter-end price $33.93 · Estimated holding basis $33.93
Filing context
Quarter-end price $26.52 · Estimated holding basis $25.89
Filing context
Quarter-end price $25.89 · Estimated holding basis $25.89
Filing context
Quarter-end price $20.74 · Estimated holding basis $20.74
Filing context
Quarter-end price $27.95 · Estimated holding basis $27.95
How important is Ciena in Bridgewater Associates, LP’s reported portfolio?
Relative importance is measured only within the verified primary non-option reported portfolio for each quarter.
Who else owns Ciena?
Also reported by 1 other tracked investor in their latest verified filings.
Connected research on Ciena
Only published MIL research mapped to the exact stock identity is shown here.
SEC filing evidence
Market context and filing-derived values are kept separate from actual transaction prices, which 13F filings do not disclose.
Market context only; not an investor transaction price.
Derived from validated reported value and shares where supported.
Calculated from supported filing history.
This tracker follows Bridgewater Associates, LP’s Form 13F disclosures, not Ray Dalio’s personal brokerage account. Form 13F reports quarter-end positions later and does not reveal exact trade dates or execution prices.