Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
SWI
6076
DELISTED
SolarWinds Corporation Common Stock
SWI
| $51K | ﹤0.01% |
+4,291
| New | +$49.6K |
|
6077
PUT
ABM Industries
ABM
$2.79B
| $50K | ﹤0.01% |
1,000
-2,000
| -67% | -$93.3K |
|
6078
CALL
Arbutus Biopharma
ABUS
$871M
| $50K | ﹤0.01% |
16,400
-17,400
| -51% | -$52.2K |
|
6079
CALL
Atomera
ATOM
$197M
| $50K | ﹤0.01% |
13,200
-6,600
| -33% | -$31.1K |
|
6080
CALL
Brunswick
BC
$5.18B
| $50K | ﹤0.01% |
700
-6,900
| -91% | -$563K |
|
6081
Black Hills Corp
BKH
$5.5B
| $50K | ﹤0.01% |
+935
| New | +$51K |
|
|
CTO
6082
CALL
CTO Realty Growth
CTO
$820M
| $50K | ﹤0.01% |
2,900
+900
| +45% | +$15.6K |
|
6083
CALL
Energizer
ENR
$1.44B
| $50K | ﹤0.01% |
1,700
-6,000
| -78% | -$173K |
|
6084
Gevo
GEVO
$372M
| $50K | ﹤0.01% |
90,241
+59,632
| +195% | +$39.9K |
|
6085
PUT
Gilat Satellite Networks
GILT
$830M
| $50K | ﹤0.01% |
+11,200
| New | +$59.6K |
|
6086
PUT
Knowles
KN
$3.08B
| $50K | ﹤0.01% |
2,900
-200
| -6% | -$3.36K |
|
6087
PUT
Kearny Financial
KRNY
$606M
| $50K | ﹤0.01% |
+8,200
| New | +$46.9K |
|
6088
PUT
Global X MSCI Norway ETF
NORW
$87.3M
| $50K | ﹤0.01% |
2,000
+1,600
| +400% | +$41.2K |
|
6089
Oshkosh
OSK
$8.82B
| $50K | ﹤0.01% |
+470
| New | +$54.4K |
|
6090
CALL
Pliant Therapeutics
PLRX
$65.6M
| $50K | ﹤0.01% |
4,700
+2,100
| +81% | +$27.1K |
|
|
SNBR
6091
PUT
DELISTED
Sleep Number
SNBR
| $50K | ﹤0.01% |
5,300
-6,000
| -53% | -$82.1K |
|
6092
CALL
Titan Machinery
TITN
$413M
| $50K | ﹤0.01% |
3,200
-8,300
| -72% | -$173K |
|
6093
CALL
VirTra
VTSI
$35.7M
| $50K | ﹤0.01% |
6,600
+5,500
| +500% | +$63.2K |
|
|
AAN
6094
PUT
DELISTED
The Aaron's Company Inc
AAN
| $50K | ﹤0.01% |
5,100
+4,500
| +750% | +$35.2K |
|
6095
Alpha Pro Tech
APT
$50.7M
| $49K | ﹤0.01% |
9,034
-13,615
| -60% | -$76K |
|
6096
Ares Management
ARES
$28B
| $49K | ﹤0.01% |
370
-5,595
| -94% | -$764K |
|
6097
PUT
Arhaus
ARHS
$1.04B
| $49K | ﹤0.01% |
2,900
-20,300
| -88% | -$329K |
|
|
LONA
6098
PUT
LeonaBio Inc
LONA
$68.5M
| $49K | ﹤0.01% |
1,870
+1,750
| +1,458% | +$41.3K |
|
6099
Breakwave Dry Bulk Shipping ETF
BDRY
$29.4M
| $49K | ﹤0.01% |
4,011
+2,847
| +245% | +$36.1K |
|
|
CMPS
6100
CALL
Compass Pathways
CMPS
$1.56B
| $49K | ﹤0.01% |
8,200
-8,100
| -50% | -$63.8K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.