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 | |
|---|---|---|---|---|---|---|
|
151
CALL
Pfizer
PFE
$143B
| $104M | 0.06% |
4,702,500
+1,022,400
| +28% | +$28.1M |
|
152
PUT
Wells Fargo
WFC
$263B
| $104M | 0.06% |
1,744,500
-453,100
| -21% | -$26.7M |
|
153
CALL
CVS Health
CVS
$140B
| $102M | 0.06% |
1,730,300
+695,100
| +67% | +$43.5M |
|
154
PUT
Morgan Stanley
MS
$344B
| $102M | 0.06% |
1,045,300
-113,400
| -10% | -$10.8M |
|
155
PUT
Lam Research
LRCX
$397B
| $102M | 0.06% |
954,000
+74,000
| +8% | +$7.1M |
|
156
PUT
Target
TGT
$62.6B
| $101M | 0.06% |
683,300
-60,300
| -8% | -$9.49M |
|
157
CALL
AbbVie
ABBV
$453B
| $101M | 0.06% |
588,600
+32,700
| +6% | +$5.42M |
|
158
PUT
Cisco
CSCO
$445B
| $101M | 0.06% |
2,119,800
-184,300
| -8% | -$8.75M |
|
159
CALL
State Street SPDR Portfolio Short Term Treasury ETF
SPTS
$6.07B
| $97.8M | 0.06% |
691,000
-463,500
| -40% | -$13.3M |
|
160
CALL
Applied Materials
AMAT
$444B
| $97.2M | 0.06% |
411,800
-249,300
| -38% | -$53.5M |
|
161
CALL
Vanguard S&P 500 ETF
VOO
$979B
| $96.3M | 0.06% |
356,600
-1,500
| -0.4% | -$722K |
|
162
PUT
Carvana
CVNA
$45.3B
| $95.7M | 0.06% |
3,716,500
-2,101,500
| -36% | -$42.3M |
|
163
PUT
Deckers Outdoor
DECK
$14.1B
| $95.4M | 0.06% |
591,600
+429,000
| +264% | +$66M |
|
|
164
Broadcom
AVGO
$1.85T
| $95.4M | 0.06% |
593,990
+329,820
| +125% | +$46.2M |
|
165
CALL
Vistra
VST
$56.3B
| $93.5M | 0.06% |
1,087,800
+131,500
| +14% | +$11M |
|
|
166
CALL
Carvana
CVNA
$45.3B
| $92.2M | 0.06% |
3,583,000
+453,500
| +14% | +$9.13M |
|
167
PUT
Caterpillar
CAT
$412B
| $90.8M | 0.06% |
272,600
-213,100
| -44% | -$73.9M |
|
168
CALL
McDonald's
MCD
$187B
| $90.1M | 0.06% |
353,500
+70,800
| +25% | +$18.8M |
|
|
169
CALL
Target
TGT
$62.6B
| $89.3M | 0.06% |
603,400
-27,500
| -4% | -$4.33M |
|
170
PUT
Direxion Daily S&P Oil & Gas Exp. & Prod. Bull 2X ETF
GUSH
$257M
| $89.1M | 0.06% |
2,753,000
+557,000
| +25% | +$21.6M |
|
171
PUT
United Rentals
URI
$64.1B
| $88.9M | 0.05% |
137,400
+88,900
| +183% | +$59.1M |
|
172
CALL
AT&T
T
$160B
| $88.2M | 0.05% |
4,616,500
+1,431,200
| +45% | +$24.9M |
|
173
PUT
Occidental Petroleum
OXY
$57.3B
| $87.6M | 0.05% |
1,389,800
-727,700
| -34% | -$46.7M |
|
|
174
PUT
State Street SPDR Portfolio Short Term Treasury ETF
SPTS
$6.07B
| $87M | 0.05% |
616,400
-220,400
| -26% | -$6.34M |
|
|
175
Intel
INTC
$532B
| $86.7M | 0.05% |
2,799,750
+1,437,682
| +106% | +$47.1M |
|
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.