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 | |
|---|---|---|---|---|---|---|
876
Palo Alto Networks
PANW
$265B
| $12.6M | 0.01% |
74,332
+65,140
| +709% | +$9.74M |
|
877
CALL
Virgin Galactic
SPCE
$332M
| $12.6M | 0.01% |
1,492,900
+1,462,380
| +4,792% | +$26.5M |
|
878
PUT
ZIM Integrated Shipping Services
ZIM
$3.08B
| $12.6M | 0.01% |
567,600
-22,500
| -4% | -$364K |
|
879
CALL
Cinemark Holdings
CNK
$3.82B
| $12.6M | 0.01% |
581,600
+402,200
| +224% | +$7.3M |
|
880
CALL
PACCAR
PCAR
$68.8B
| $12.5M | 0.01% |
121,900
+900
| +0.7% | +$99.2K |
|
881
PUT
Mondelez International
MDLZ
$77.1B
| $12.5M | 0.01% |
191,600
+40,600
| +27% | +$2.79M |
|
882
PUT
AngloGold Ashanti
AU
$39.7B
| $12.5M | 0.01% |
496,800
+39,900
| +9% | +$947K |
|
|
UCD
883
PUT
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $12.5M | 0.01% |
207,400
+20,800
| +11% | +$1.25M |
|
884
PUT
AES
AES
$10.6B
| $12.4M | 0.01% |
707,900
+65,700
| +10% | +$1.25M |
|
885
CALL
Aon
AON
$76B
| $12.4M | 0.01% |
42,300
-16,400
| -28% | -$4.85M |
|
886
CALL
Franklin Resources
BEN
$16.8B
| $12.4M | 0.01% |
555,600
+502,300
| +942% | +$12.1M |
|
887
CALL
Floor & Decor
FND
$5.73B
| $12.4M | 0.01% |
124,900
+53,400
| +75% | +$6.14M |
|
888
CALL
AGNC Investment
AGNC
$12.3B
| $12.4M | 0.01% |
1,296,100
+237,400
| +22% | +$2.27M |
|
|
BNY
889
PUT
Bank of New York Mellon
BNY
$109B
| $12.3M | 0.01% |
205,700
-41,100
| -17% | -$2.38M |
|
|
MPT
890
PUT
Medical Properties Trust
MPT
$2.87B
| $12.3M | 0.01% |
2,853,400
+189,500
| +7% | +$908K |
|
891
CALL
Sunrun
RUN
$2.48B
| $12.2M | 0.01% |
1,031,500
-701,200
| -40% | -$8.59M |
|
892
CALL
monday.com
MNDY
$3.03B
| $12.2M | 0.01% |
50,700
-49,900
| -50% | -$10.5M |
|
893
CALL
Elastic
ESTC
$5.96B
| $12.2M | 0.01% |
106,800
-71,200
| -40% | -$7.48M |
|
894
PUT
Shift4
FOUR
$3.68B
| $12.1M | 0.01% |
165,600
+101,100
| +157% | +$6.7M |
|
895
CALL
Aptiv
APTV
$11.9B
| $12.1M | 0.01% |
172,400
+92,300
| +115% | +$7.1M |
|
896
PUT
Domino's
DPZ
$10.7B
| $12.1M | 0.01% |
23,500
-19,400
| -45% | -$9.89M |
|
897
CALL
Align Technology
ALGN
$12B
| $12.1M | 0.01% |
50,200
-8,700
| -15% | -$2.42M |
|
898
CALL
Monster Beverage
MNST
$91.5B
| $12.1M | 0.01% |
242,500
+135,400
| +126% | +$7.18M |
|
|
X
899
PUT
DELISTED
US Steel
X
| $12.1M | 0.01% |
319,800
-141,800
| -31% | -$5.41M |
|
900
PUT
DuPont de Nemours
DD
$18.6B
| $12.1M | 0.01% |
119,341
-261,067
| -69% | -$25.6M |
|
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.