IBOV 185,229.17 ▼ 0.41% IPSA 11,381.18 ▲ 1.30% IPC MEX 63,375.93 ▼ 0.78% MERVAL 3,021,926 ▼ 1.29% COLCAP 2,548.22 ▲ 1.05% BVL PERÚ 60,023.65 ▼ 1.13% USD/BRL5.14▲ 0.26% USD/MXN17.22▲ 0.30% USD/CLP959.00▼ 0.31% USD/COP3,175▲ 1.37% USD/PEN3.37▼ 0.10% USD/ARS1,514▲ 0.26% USD/UYU40.16▲ 2.90% USD/PYG5,906▲ 2.95% USD/BOB9.95▼ 6.56% USD/DOP58.83▲ 0.22% USD/CRC444.45▲ 2.49% USD/GTQ7.63▲ 3.03% USD/HNL26.85▲ 0.38% USD/NIO36.62▲ 2.64% USD/VES846.42▼ 0.13% USD/PAB1.00— 0.00% USD/BZD2.00— 0.00% USD/JMD 157.28 — 0.00% USD/TTD6.75▲ 2.57% EUR/BRL5.91▲ 0.04% BRENT 88.88 ▼ 0.03% WTI 83.11 ▼ 0.11% IRON ORE 161.91 — — COPPER 6.61 ▲ 0.03% GOLD 4,461 ▲ 1.78% SILVER 65.59 ▲ 1.26% SOY 1,184 ▲ 3.20% CORN 480.50 ▲ 10.02% WHEAT 655.00 ▲ 3.93% COFFEE 317.25 ▼ 5.51% SUGAR 16.43 ▼ 1.79% ORANGE JUICE 138.55 ▼ 0.47% COTTON 85.03 ▲ 2.33% COCOA 5,719 ▲ 3.18% BEEF 223.60 ▼ 3.93% CATTLE 339.10 ▼ 3.16% LITHIUM 75.20 ▲ 1.47% PETR4 41.64 ▼ 0.05% VALE3 72.97 ▲ 0.83% ITUB4 38.60 ▼ 1.03% BBDC4 16.85 ▲ 0.36% ABEV3 14.89 ▼ 0.80% BBAS3 19.37 ▲ 0.47% B3SA3 14.26 ▼ 0.21% WEGE3 47.59 ▲ 0.49% PRIO3 59.14 ▼ 0.19% SUZB3 41.33 ▲ 2.35% RENT3 34.68 ▼ 0.09% AZZA3 15.89 ▼ 2.63% CSAN3 3.22 ▼ 1.83% RAIZ4 0.25 — 0.00% PCAR3 2.75 ▼ 0.36% GMAT3 3.65 ▼ 1.08% PSSA3 48.13 ▼ 0.54% CVCB3 1.33 ▼ 2.92% POSI3 3.36 ▲ 2.44% SLCE3 13.34 ▲ 0.30% NATU3 8.14 ▼ 0.73% IBOV 185,229.17 ▼ 0.41% IPSA 11,381.18 ▲ 1.30% IPC MEX 63,375.93 ▼ 0.78% MERVAL 3,021,926 ▼ 1.29% COLCAP 2,548.22 ▲ 1.05% BVL PERÚ 60,023.65 ▼ 1.13% USD/BRL 5.16 ▲ 0.01% USD/MXN 17.06 ▼ 0.24% USD/CLP 913.98 ▲ 0.04% USD/COP 3,140 ▲ 0.03% USD/PEN 3.36 ▼ 0.66% USD/ARS 1,493 ▲ 0.10% USD/UYU 40.27 ▲ 1.24% USD/PYG 5,939 ▲ 1.68% USD/BOB 11.64 ▼ 0.76% USD/DOP 58.34 ▲ 1.25% USD/CRC 445.92 ▲ 0.89% USD/GTQ 7.62 ▲ 2.21% USD/HNL 26.79 ▲ 1.57% USD/NIO 36.62 ▲ 0.69% USD/VES 762.44 ▼ 0.13% USD/PAB 1.00 — 0.00% USD/BZD 2.00 — 0.00% USD/JMD 157.28 — 0.00% USD/TTD 6.70 ▲ 0.61% EUR/BRL 5.95 ▲ 1.01% BRENT 88.88 ▼ 0.03% WTI 83.11 ▼ 0.11% IRON ORE 161.91 — — COPPER 6.61 ▲ 0.03% GOLD 4,461 ▲ 1.78% SILVER 65.59 ▲ 1.26% SOY 1,184 ▲ 3.20% CORN 480.50 ▲ 10.02% WHEAT 655.00 ▲ 3.93% COFFEE 317.25 ▼ 5.51% SUGAR 16.43 ▼ 1.79% ORANGE JUICE 138.55 ▼ 0.47% COTTON 85.03 ▲ 2.33% COCOA 5,719 ▲ 3.18% BEEF 223.60 ▼ 3.93% CATTLE 339.10 ▼ 3.16% LITHIUM 75.20 ▲ 1.47% PETR4 41.64 ▼ 0.05% VALE3 72.97 ▲ 0.83% ITUB4 38.60 ▼ 1.03% BBDC4 16.85 ▲ 0.36% ABEV3 14.89 ▼ 0.80% BBAS3 19.37 ▲ 0.47% B3SA3 14.26 ▼ 0.21% WEGE3 47.59 ▲ 0.49% PRIO3 59.14 ▼ 0.19% SUZB3 41.33 ▲ 2.35% RENT3 34.68 ▼ 0.09% AZZA3 15.89 ▼ 2.63% CSAN3 3.22 ▼ 1.83% RAIZ4 0.25 — 0.00% PCAR3 2.75 ▼ 0.36% GMAT3 3.65 ▼ 1.08% PSSA3 48.13 ▼ 0.54% CVCB3 1.33 ▼ 2.92% POSI3 3.36 ▲ 2.44% SLCE3 13.34 ▲ 0.30% NATU3 8.14 ▼ 0.73%
since 2009
Saturday, September 19, 2026

Ambipar Exits B3’s Small Cap Index After Meteoric Rise

By · January 8, 2025 · 2 min read

The LatAm Brief

One email, every weekday morning. What moved in Latin American markets, politics and expat life.

Yesterday’s subject line: “Bolivia's 83% fuel shock, hours after the IMF loan”

Free. We send a confirmation link first — nothing arrives until you click it. Unsubscribe with one click in any edition. If you stop opening us for 30 days we stop sending by ourselves, as we assume the interest is no longer there. See our privacy policy. We never share your email.

The Brazilian stock exchange B3 removed Ambipar (AMBP3) from its Small Cap Index (SMLL) this week. This move follows Ambipar’s extraordinary stock performance in 2024, with shares skyrocketing over 730%.

Ambipar’s market value soared to approximately R$22.5 billion, making it the 36th most valuable company on B3. This remarkable growth pushed Ambipar beyond the scope of the SMLL, which tracks smaller-cap companies.

Factors Behind the Surge

CEO Tércio Borlenghi Junior played a pivotal role in Ambipar‘s stock rally. In July 2024, he increased his stake to 73.135% of the company’s total capital, acquiring 122,165,450 shares.

Investment firm Trustee also contributed to the stock’s momentum. The firm initially purchased 15.03% of Ambipar’s shares, later reducing its position to 11.89%.

Ambipar Exits B3's Small Cap Index After Meteoric Rise
Ambipar Exits B3’s Small Cap Index After Meteoric Rise.
One-stop reference
Company Intelligence
Every listed company in Latin America — financials, ownership and structure for 1,450+ companies across 26 exchanges, in one place.
Browse the directory →
RT
Ask Rio Times
Latin American markets, currencies and companies.
Open the full Ask Rio Times →

Market analysts attribute Ambipar’s meteoric rise to a short squeeze. This phenomenon occurs when investors betting against a stock rush to buy shares, driving up the price.

Market Reactions

Ambipar’s stock faced multiple trading halts in December and January due to extreme volatility. The B3 exchange implemented these measures to maintain market stability.

The SMLL index underwent additional changes in January. Stocks like Aeris, Romi, Trisul, Wiz, and Portobello exited the index. New entrants include BR Partners, Carrefour, Hypera, Multiplan, Recrusul, SYN, Priner, and CSN.

SMLL Index Criteria

To qualify for the SMLL index, stocks must meet specific requirements:

1. Trade in 95% of sessions during the previous three portfolio periods
2. Fall outside the top 85% of B3’s market capitalization
3. Avoid penny stock classification (priced below one real)

The index undergoes quarterly reviews to ensure compliance with these criteria.

Ambipar’s departure from the SMLL took effect on Monday, February 6th. Concurrently, other B3 indices saw composition changes. The Ibovespa, Brazil’s main stock index, welcomed Marcopolo and Porto Seguro while bidding farewell to Alpargatas and Eztec.

Key Facts

Deep Dive

For the complete picture, read our in-depth guide: Latin America Stock Markets 2026: Ibovespa, Merval, COLCAP, IPSA and IPC Guide

This article was produced by The Rio Times’ automated newsroom system. How we use AI · Report an error

LatAm Markets: Live Signals → — real-time movers, turnover leaders and FX across Latin America.

Read More from The Rio Times

The Rio Times · Power Map
See who really holds power in Latin America
Click to open the Power Map

Rotate for Best Experience

This report is optimized for landscape viewing. Rotate your phone for the full experience.