CIEN — CIENA CORPToday's name, from the SEC's present-day ticker list — a present-day mapping, not the name as of each filing.

Congress trades
17
all time
Members · 12m
3
5 buys · 2 sells · by trade date
Latest filing
07-21
2026-07-21
Rows filed past the STOCK Act's 45-day window, stated on the row, never editorialised; both dates and the receipt stay on every row.
4
13F holders
839
top 500 listed · 2026-03-31
Congress: statutory ranges, filed up to 45 days after the trade · 13F: quarter-end snapshots, filed up to 45 days lateras of 2026-10-29
Congress 17Institutional 500

Congress · disclosure timeline

By trade date · 24 months · 9 rows ▲ buy, ▼ sell; height = lower bound (log scale). Trade date, not filing date — the filing lag is in the table below.

9 dated disclosures in the window, placed by trade date; magnitudes are the disclosed lower bounds, against gridlines at $15K, $250K, $5M.

Members active in CIEN

12 months · most active first Rows = number of disclosures, not dollars. Net = lower bound of the net range. Committees as of each member's latest trade in the window (roster snapshot 2026-10-29).
Members disclosing CIEN in the trailing 12 months
MemberRowsNet disclosed flow for this ticker: purchases minus sales, computed as a net range on the disclosed amounts. A lower bound is provable, never a point.Number of committees the member sat on as of their latest trade date in the window, from the cc0-legislators roster snapshot. Context, never an allegation; jurisdiction overlap needs the sector join.
Lisa C. McClain R–MI-93−$29.0K to $13.0K2
Alan Armstrong R–OK2$2.0K to $30.0K2
Gilbert Ray Cisneros, Jr. D–CA-312$2.0K to $30.0K2

3 members

Congressional disclosures

Newest filed firstAll 17 rows ↗
Latest congressional filings mentioning CIEN
FiledMemberSide · OwnerTraded · LagAmountRange · FlagsSrc
2026-07-21Alan Armstrong R–OKBUYTraded 03-30 LATE·113d$1K–$15K
2026-07-21Alan Armstrong R–OKBUYTraded 03-27 LATE·116d$1K–$15K
2026-06-08Gilbert Ray Cisneros, Jr. D–CA-31BUYTraded 05-29 +10d$1K–$15K
2026-06-08Gilbert Ray Cisneros, Jr. D–CA-31BUYTraded 05-14 +25d$1K–$15K
2025-11-21Lisa C. McClain R–MI-9SELL SP (spouse-owned)Traded 10-31 +21d$1K–$15K
2025-11-21Lisa C. McClain R–MI-9SELL SP (spouse-owned)Traded 10-30 +22d$1K–$15K
2025-11-21Lisa C. McClain R–MI-9BUY SP (spouse-owned)Traded 10-30 +22d$1K–$15K
2025-11-21Lisa C. McClain R–MI-9SELL SP (spouse-owned)Traded 10-15 +37d$1K–$15K
2025-08-13Lisa C. McClain R–MI-9BUY SP (spouse-owned)Traded 06-17 LATE·57d$1K–$15K
2024-09-06John James R–MI-10SELLTraded 09-04 +2d$1K–$15K

13F holders · Quarter ended 2026-03-31Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt. · longs only

Top institutional holders of CIEN for quarter 2026-03-31, 1–25 of 839 holders
#FilerValueSecuritiesFlagsderived by Public Filings from this build's reviewed ticker-mapping holders list for this share class; that list carries each holder's share count, share change and filed date, which this table does not show, but no document links — the EDGAR link opens the filer's 13F list·§
1FMR LLC$8.2B1
derived ·§ EDGAR ↗
2BlackRock, Inc.$5.2B1
derived ·§ EDGAR ↗
3JPMORGAN CHASE & CO$3.7B1
derived ·§ EDGAR ↗
4VANGUARD CAPITAL MANAGEMENT LLC$3.6B1
derived ·§ EDGAR ↗
5VANGUARD PORTFOLIO MANAGEMENT LLC$2.9B1
derived ·§ EDGAR ↗
6STATE STREET CORP$2.4B1
derived ·§ EDGAR ↗
7GEODE CAPITAL MANAGEMENT, LLC$1.6B1
derived ·§ EDGAR ↗
8Capital Research Global Investors$1.1B1
derived ·§ EDGAR ↗
9BANK OF AMERICA CORP /DE/$759M1
derived ·§ EDGAR ↗
10Capital World Investors$670M1
derived ·§ EDGAR ↗
11Jericho Capital Asset Management L.P.$643M1
derived ·§ EDGAR ↗
12MORGAN STANLEY$606M1
derived ·§ EDGAR ↗
13Invesco Ltd.$594M1
derived ·§ EDGAR ↗
14ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$539M1
derived ·§ EDGAR ↗
15CHARLES SCHWAB INVESTMENT MANAGEMENT INC$494M1
derived ·§ EDGAR ↗
16VOYA INVESTMENT MANAGEMENT LLC$468M1
derived ·§ EDGAR ↗
17NORTHERN TRUST CORP$461M1
derived ·§ EDGAR ↗
18DIMENSIONAL FUND ADVISORS LP$445M1
derived ·§ EDGAR ↗
19BNP Paribas Asset Management Holding S.A.$397M1
derived ·§ EDGAR ↗
20AQR CAPITAL MANAGEMENT LLC$375M1
derived ·§ EDGAR ↗
21UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$331M1
derived ·§ EDGAR ↗
22Nuveen, LLC$328M1
derived ·§ EDGAR ↗
23LONE PINE CAPITAL LLC$314M1
derived ·§ EDGAR ↗
24Polar Capital Holdings Plc$310M1
derived ·§ EDGAR ↗
25VANGUARD FIDUCIARY TRUST CO$308M1
derived ·§ EDGAR ↗
Show the top 500 of 839 holders
Truncated by Public Filings. Top 500 of 839 holders shown; the rest are on EDGAR. Method ↗

Crowding — not available in this build. No holder rows for the selected period, so no percentile can be ranked.

Congress ↔ notable managers · CIEN

Congress · last 90 days

Buyers
0 — —
Sellers
0 — —

filed 2026-07-31 → 2026-10-29 · statutory ranges

Notable managers · quarter ended 2026-03-31

Adding
1 Lone Pine Capital $314M held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · CIENA CORP

Merged timeline of congressional filings and notable-manager moves on CIEN
DateWhoChangeSize
2026-05-15Lone Pine Capital 13FNEW+809,522 sh
2026-05-15Bridgewater Associates 13FTRIM−68,797 sh
2026-05-15Gotham Asset Management 13FTRIM−15,000 sh
2026-05-14Caxton Associates 13FEXIT−10,502 sh

4 newest, by filing date · 13F rows are quarter-end snapshots, not trades

Congress vs filers

12 months
Congress net (rows)5 buy / 2 sell
Congress net ($ bound)−$25.0K to $73.0K
Filersnot computedThe filer side needs per-issuer quarter-over-quarter actions, which the published aggregate does not carry for this issuer. Convergence and divergence are stated only when both sides are computed.