RENAISSANCE TECHNOLOGIES LLC ECOR — ELECTROCORE INC

Ownership history in RENAISSANCE TECHNOLOGIES LLC  ·  29 quarters on record

AI Ownership Summary

RENAISSANCE TECHNOLOGIES LLC reported ELECTROCORE INC (ECOR) in 29 quarterly 13F filings from 2023 Q4 through 2026 Q1. The latest visible filing shows ECOR at 0.00% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this ECOR ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was RENAISSANCE TECHNOLOGIES LLC's position in ELECTROCORE INC, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q1

ECOR was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.0% in 2024 Q4

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q4 to 2026 Q1

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

ECOR stock page RENAISSANCE TECHNOLOGIES LLC fund profile RENAISSANCE TECHNOLOGIES LLC full holdings
How RENAISSANCE TECHNOLOGIES LLC held ECOR — position size vs. price
% of Fund (quarterly)    ECOR price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED — — — 44,409 -10,077 -18.5% 0.00% $268K 2026-05-14 $6.43
2025 Q4 REDUCED 45.7% +34.3% ❌ 54,486 -45,800 -45.7% 0.00% $244K 2026-02-12 $5.59
2025 Q3 REDUCED 44.5% -3.6% ✅ 100,286 -80,400 -44.5% 0.00% $496K 2025-11-14 (Est.) $5.60
2025 Q2 ADDED — — — 180,686 +2,261 +1.3% 0.00% $954K 2025-08-13 $5.14
2025 Q1 ADDED — — — 178,425 +46,639 +35.4% 0.00% $1.2M 2025-05-14 $4.61
2024 Q4 ADDED — — — 131,786 +58,800 +80.6% 0.00% $2.1M 2025-02-13 $17.17
2024 Q3 ADDED — — — 72,986 +4,200 +6.1% 0.00% $527K 2024-11-13 $13.40
2024 Q2 ADDED — — — 68,786 +2,270 +3.4% 0.00% $442K 2024-08-09 $5.65
2024 Q1 ADDED — — — 66,516 +18,100 +37.4% 0.00% $410K 2024-05-13 $7.25
2023 Q4 ADDED — — — 48,416 +5,800 +13.6% 0.00% $288K 2024-02-13 $7.13
19 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding ECOR

As of 2026 Q1 — sorted by position size

INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC 3Y 0.02% Jaffetilchin Investment Partners, LLC 3Y 7Y 0.02% WealthShield Partners, LLC 3Y 7Y 0.02% TOBIAS FINANCIAL ADVISORS, INC. 3Y 0.01% Wealthspire Advisors, LLC 3Y 7Y 0.0% BFSG, LLC 3Y 7Y 0.0% BALYASNY ASSET MANAGEMENT L.P. 3Y 7Y 0.0% Rialto Wealth Management, LLC 0.0% Kozak & Associates, Inc. 3Y 0.0% Prestige Wealth Management Group LLC 3Y 7Y 0.0%

FAQ About RENAISSANCE TECHNOLOGIES LLC and ECOR

These are the practical questions this page is built to answer before you even open the full history table.

How long has RENAISSANCE TECHNOLOGIES LLC reported owning ECOR?

RENAISSANCE TECHNOLOGIES LLC reported ECOR across 10 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported ECOR position in RENAISSANCE TECHNOLOGIES LLC's portfolio?

The largest reported portfolio weight for ECOR was 0.00% in 2024 Q4.

What is the latest reported ECOR position on this page?

The most recent filing on this page is 2026 Q1, when RENAISSANCE TECHNOLOGIES LLC reported 44,409 shares, equal to 0.00% of portfolio, with an estimated market value of $268K.

What does the chart on this ECOR ownership page compare?

The chart compares RENAISSANCE TECHNOLOGIES LLC's quarterly ECOR portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did RENAISSANCE TECHNOLOGIES LLC time their ECOR position?

Based on 13F filing dates vs. subsequent ECOR price moves, RENAISSANCE TECHNOLOGIES LLC correctly timed 11 out of 21 reported position changes (52%). The annualised alpha on ECOR relative to SPY over the holding period was -39.5%.

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