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 | |
|---|---|---|---|---|---|---|
2951
PUT
3D Systems Corp
DDD
$430M
| $964K | ﹤0.01% |
314,100
-124,500
| -28% | -$457K |
|
2952
SIGA Technologies
SIGA
$226M
| $962K | ﹤0.01% |
126,812
+64,056
| +102% | +$522K |
|
|
MOR
2953
PUT
DELISTED
MorphoSys AG American Depositary Shares
MOR
| $962K | ﹤0.01% |
52,900
-2,700
| -5% | -$49.1K |
|
2954
CALL
EPR Properties
EPR
$4.89B
| $961K | ﹤0.01% |
22,900
+14,300
| +166% | +$588K |
|
2955
CALL
SSR Mining
SSRM
$5.47B
| $961K | ﹤0.01% |
213,100
+169,300
| +387% | +$868K |
|
2956
PUT
STAAR Surgical
STAA
$1.15B
| $961K | ﹤0.01% |
20,200
-8,400
| -29% | -$368K |
|
2957
State Street Communication Services Select Sector SPDR ETF
XLC
$22.2B
| $960K | ﹤0.01% |
11,208
-21,924
| -66% | -$1.81M |
|
2958
PUT
Freedom Holding
FRHC
$9.73B
| $957K | ﹤0.01% |
12,700
-4,900
| -28% | -$355K |
|
2959
PUT
Schrodinger
SDGR
$1.14B
| $955K | ﹤0.01% |
49,400
-29,400
| -37% | -$678K |
|
2960
PUT
ICL Group
ICL
$6.67B
| $954K | ﹤0.01% |
222,900
+85,500
| +62% | +$402K |
|
2961
CALL
Veralto
VLTO
$23B
| $954K | ﹤0.01% |
10,000
+3,700
| +59% | +$354K |
|
2962
PUT
Star Bulk Carriers
SBLK
$3.02B
| $953K | ﹤0.01% |
39,100
-191,900
| -83% | -$4.77M |
|
|
BERY
2963
DELISTED
Berry Global Group, Inc.
BERY
| $953K | ﹤0.01% |
17,646
-2,022
| -10% | -$110K |
|
|
BERY
2964
PUT
DELISTED
Berry Global Group, Inc.
BERY
| $953K | ﹤0.01% |
17,642
-109
| -0.6% | -$5.92K |
|
2965
PUT
Clear Secure
YOU
$5.43B
| $952K | ﹤0.01% |
50,900
+31,100
| +157% | +$563K |
|
2966
Regions Financial
RF
$26.1B
| $950K | ﹤0.01% |
47,422
+26,047
| +122% | +$505K |
|
2967
CALL
Chefs' Warehouse
CHEF
$3.86B
| $946K | ﹤0.01% |
24,200
-2,000
| -8% | -$73.9K |
|
2968
CALL
Installed Building Products
IBP
$6.2B
| $946K | ﹤0.01% |
4,600
-5,600
| -55% | -$1.26M |
|
2969
CALL
St. Joe Company
JOE
$3.53B
| $946K | ﹤0.01% |
17,300
+4,000
| +30% | +$225K |
|
2970
PUT
Iridium Communications
IRDM
$4.83B
| $945K | ﹤0.01% |
35,500
+20,000
| +129% | +$563K |
|
2971
PUT
Steris
STE
$21.4B
| $944K | ﹤0.01% |
+4,300
| New | +$934K |
|
2972
CALL
Corporacion America
CAAP
$4.26B
| $943K | ﹤0.01% |
56,700
+8,300
| +17% | +$144K |
|
2973
PUT
Reliance Steel & Aluminium
RS
$20.6B
| $942K | ﹤0.01% |
3,300
-3,200
| -49% | -$964K |
|
|
DAY
2974
PUT
DELISTED
Dayforce
DAY
| $942K | ﹤0.01% |
19,000
-5,300
| -22% | -$303K |
|
2975
CALL
Teucrium Agricultural Fund
TAGS
$19.2M
| $941K | ﹤0.01% |
87,000
+38,300
| +79% | +$1.07M |
|
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.