Electro Optic (EOS) is held by 15 ASX ETFs. Over all time it rose 578.4%: on $10,000, +$57836. We explain 44 big moves in that time.
About EOS
- SectorIndustrials
- IndustryCapital Goods
- Size$2.5b
- Held by15 ETFs
- Big moves44 in all time
Each dot is a move we explain. Tap one, or a row of Why it moved, to see what caused it.
Why it moved
- +12.6%25 Aug 2026· Earnings Beat
Electro Optic Systems surged after reporting a 283% revenue jump and an $846 million order book in its 1H 2026 half-year results, significantly exceeding market expectations.
- +9.7%31 Jul 2026· Sector Flow
EOS shares surged 10.8% amid a broader rally in Australian defence stocks driven by renewed geopolitical tensions and rising defence spending, with company-specific catalysts including an expanding order pipeline and improving cash conversion.
- −8.5%30 Jul 2026· Unknown
The stock dropped for unclear reasons, likely technical/sector flows, but the news around the date shows prior bullish analyst optimism and a subsequent 10.8% rebound.
- +8.4%27 Jul 2026· Guidance Up
EOS posted record half-year revenue of A$169m and a record A$846m order book, raising FY26 guidance on the same day as the price move.
- +14.1%19 Jun 2026· Contract
Electro Optic Systems announced a new US$124 million counter-drone order and a Middle East joint venture for laser weapons and remote weapon stations, driving the stock up 14.13%.
- +16.2%29 May 2026· Contract
EOS shares surged following the announcement of a major deal with MARSS, a capital raise, and the appointment of former senior defence leaders to its board.
- +10.7%23 May 2026· Capital Raise
The stock rose 10.72% on May 22, 2026, likely recovering from a capital-raise driven selloff earlier in the week, supported by completion of the MARSS acquisition and a new strategic investment.
- −10.3%20 May 2026· Capital Raise
Electro Optic Systems shares fell sharply after announcing a $150 million placement and $40 million strategic placement, causing dilution concerns.
- −9.7%23 Mar 2026· Stake Change
EOS shares fell sharply following a period of insider selling by company directors, which spooked investors.
- +9.0%18 Mar 2026· Stake Change
Following a strong rally with shares up 80% over the last month and near all-time highs, the stock experienced a notable pullback as insider selling followed an options exercise.
- −17.0%17 Mar 2026· Stake Change
Insider selling following option exercises triggered a sharp pullback in EOS shares after a strong rally.
- −8.7%16 Mar 2026· Sector Flow
EOS shares pulled back from a recent high after a rally pause, following new counter-drone orders.
- +18.3%13 Mar 2026· Contract
Electro Optic Systems announced new Middle East and US counter-drone system orders worth $45 million on 13 March 2026, driving the stock up 18.35%.
- +8.7%10 Mar 2026· Sector Flow
Analyst reports and growth stock commentary highlighted EOS's momentum and potential, coinciding with a sector-wide interest in defence technology stocks on a day when broad markets fell due to an oil shock.
- +13.2%25 Feb 2026· Operational
EOS shares surged 13-17% following publication of a strong order book update and optimism about future growth, with further support from a broker target price upgrade.
- +13.7%17 Feb 2026· Sector Flow
Sector-wide buying interest in ASX defence stocks, with peer Austal shares soaring 20% on the same Monday, lifted EOS shares in sympathy.
- −7.8%12 Feb 2026· Short Interest
EOS shares fell on February 11, 2026, likely due to continued fallout from a scathing short seller report by Grizzly Research, despite the company's rebuttal.
- +11.8%10 Feb 2026· Short Interest
EOS shares rose after the company responded to and rejected a Grizzly Research short-seller report, recovering from an initial selloff.
- −16.3%6 Feb 2026· Short Interest
A negative short-seller research report from Grizzly Research questioning the legitimacy of a Korean contract triggered a sharp sell-off and trading halt.
- −8.5%29 Jan 2026· Sector Flow
Likely part of a broader sell-off in ASX defence tech stocks on the day, which coincided with a Motley Fool article noting the stock was down 10% in a week.
- +10.3%13 Jan 2026· Takeover / M&A
EOS announced a $228m acquisition of MARSS, a European counter-drone C2 system provider.
- +7.8%23 Dec 2025· Sector Flow
Broad sector attention on ASX defence stocks following triple-digit gains, with positive commentary suggesting 2026 could be massive for EOS.
- +16.8%19 Dec 2025· Contract
EOS shares surged after the company announced a new $32 million US weapons deal (RWS order) for a North American customer.
- +16.6%16 Dec 2025· Contract
EOS announced a conditional high energy laser contract and a major $120M Asia military contract, driving the stock up sharply.
- +28.9%15 Dec 2025· Contract
Electro Optic Systems announced a major conditional high energy laser contract, likely the $120M Asia military deal, driving the stock up.
- −11.5%5 Nov 2025· Sector Flow
The 15% decline over the past week, including the abnormal price move, appears to be the result of a broader sector-wide sell-off in defence stocks, though no specific company announcement is cited in the available news.
- +8.7%27 Oct 2025· Sector Flow
Drone-related terrorism concerns in Europe drove investors toward Australian defence technology stocks, lifting EOS.AX.
- +8.0%23 Oct 2025· Unknown
Insufficient evidence to determine the cause of the price movement.
- −9.4%17 Oct 2025· Sector Flow
Broad sector-wide surge in ASX defence stocks, not company-specific news, likely led to profit-taking in EOS.AX after previous gains, causing the drop.
- −9.9%15 Oct 2025· Sector Flow
Stock fell amid a sector-wide surge in defence stocks, likely due to profit-taking or rotation after a recent run-up, with no company-specific news.
- −10.4%14 Oct 2025· Sector Flow
No specific catalyst identified; the move likely reflects broader sector volatility or profit-taking in a hot defence sector.
- −13.3%2 Oct 2025· Unknown
No clear catalyst identified; the only available news is a positive article from two days prior, insufficient to explain the drop.
- +8.1%30 Sep 2025· Unknown
No clear stock-specific catalyst identified; the move likely stems from broad market or sector momentum.
- +13.2%29 Sep 2025· Unknown
No specific news article explains the price move; likely driven by broad market sentiment or sector flow, but evidence is insufficient.
- +9.2%3 Sep 2025· Unknown
No specific news or announcements were identified for the date, leaving the cause of the price move undetermined.
- −10.3%28 Aug 2025· Contract
Profit-taking after the company's successful LAND 156 bid announcement
- +13.3%27 Aug 2025· Contract
EOS was announced as part of the successful LAND 156 bid team, a material defence contract win.
- −13.1%20 Aug 2025· Unknown
No specific news found; the price drop likely reflects market or sector-specific factors not captured in available articles.
- +13.7%12 Aug 2025· Contract
The stock continued its rally fueled by a recent $125 million contract win and a 300% share price spike over three months.
- +11.1%7 Aug 2025· Contract
EOS secured a major $125M NATO contract for a 100kW high-energy laser weapon system for counter-drone warfare, driving the stock up 11.11%.
- +43.4%5 Aug 2025· Contract
EOS announced it secured an order for a 100kW high-energy laser weapon system for counter-drone warfare, a material contract award.
- +11.0%15 Jul 2025· Sector Flow
The stock rose as part of a broad rally in Australian defence stocks amid escalating global tensions.
- +15.5%14 Jul 2025· Sector Flow
Likely driven by a broad rally in Australian defence stocks amid rising global tensions, with no company-specific news identified.
- +14.7%19 May 2025· Contract
Announcement of a new Slinger counter-drone order from Europe
Held by 15 ETFs
Of every $10,000 in each fund, how much is in EOS today.
- ISOiShares S&P/ASX Small Ordinaries ETF$770.77%
- SSOSTATE STREET SPDR S&P/ASX SMALL ORDINARIES ETF$770.77%
- VSOVanguard MSCI Australian Small Companies Index ETF$350.35%
- OZXXGlobal X Australia ex Financials & Resources ETF$270.27%
- ARMRBetaShares Global Defence ETF$230.23%
- EX20BetaShares Australian Ex-20 Portfolio Diversifier ETF$220.22%
- GEARBetaShares Geared Australian Equities Complex ETF$180.18%
- MTUMBetaShares Australian Momentum ETF$110.11%
- STWSTATE STREET SPDR S&P/ASX 200 ETF$8.550.09%
- A300Global X Australia 300 ETF$8.510.09%