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 | |
|---|---|---|---|---|---|---|
926
CALL
Boyd Gaming
BYD
$6.43B
| $11.5M | 0.01% |
209,200
+163,400
| +357% | +$9.33M |
|
927
CALL
Keurig Dr Pepper
KDP
$40.4B
| $11.5M | 0.01% |
344,800
+186,000
| +117% | +$6.17M |
|
928
CALL
Nextpower Inc
NXT
$15.8B
| $11.5M | 0.01% |
245,600
+161,300
| +191% | +$8.02M |
|
929
Invesco QQQ Trust
QQQ
$460B
| $11.5M | 0.01% |
24,028
-2,293
| -9% | -$1.03M |
|
930
CALL
Samsara
IOT
$18.3B
| $11.5M | 0.01% |
340,400
+97,500
| +40% | +$3.36M |
|
931
CALL
WIX.com
WIX
$2.04B
| $11.4M | 0.01% |
71,900
-49,000
| -41% | -$7.04M |
|
932
Iris Energy
IREN
$14.5B
| $11.4M | 0.01% |
1,008,131
+562,979
| +126% | +$4.22M |
|
933
PUT
Scorpio Tankers
STNG
$3.95B
| $11.3M | 0.01% |
139,300
-82,000
| -37% | -$6.27M |
|
934
PUT
Generac Holdings
GNRC
$12.4B
| $11.3M | 0.01% |
85,500
-57,500
| -40% | -$7.95M |
|
935
CALL
CarMax
KMX
$8.29B
| $11.3M | 0.01% |
154,100
-27,000
| -15% | -$1.95M |
|
936
PUT
T. Rowe Price
TROW
$24.6B
| $11.3M | 0.01% |
97,900
+25,200
| +35% | +$2.9M |
|
937
PUT
Arbor Realty Trust
ABR
$966M
| $11.3M | 0.01% |
785,600
-188,900
| -19% | -$2.53M |
|
938
PUT
BILL Holdings
BILL
$4.11B
| $11.3M | 0.01% |
214,200
+14,400
| +7% | +$815K |
|
939
CALL
GitLab
GTLB
$5.1B
| $11.3M | 0.01% |
226,300
-125,700
| -36% | -$6.53M |
|
940
CALL
Corteva
CTVA
$59.4B
| $11.2M | 0.01% |
208,500
-101,900
| -33% | -$5.61M |
|
941
PUT
Apollo Global Management
APO
$68.6B
| $11.2M | 0.01% |
95,100
+8,800
| +10% | +$999K |
|
942
CALL
GSK
GSK
$102B
| $11.2M | 0.01% |
291,500
-73,700
| -20% | -$3.1M |
|
943
CALL
Bank of Montreal
BMO
$124B
| $11.2M | 0.01% |
133,400
+18,800
| +16% | +$1.71M |
|
944
CALL
Global Payments
GPN
$21.3B
| $11.2M | 0.01% |
115,600
+43,000
| +59% | +$4.74M |
|
945
CALL
Tyson Foods
TSN
$20B
| $11.2M | 0.01% |
195,600
-27,000
| -12% | -$1.58M |
|
946
CALL
Skyworks Solutions
SWKS
$9.1B
| $11.1M | 0.01% |
104,600
-164,200
| -61% | -$16.2M |
|
947
PUT
Sony
SONY
$122B
| $11.1M | 0.01% |
655,500
-124,000
| -16% | -$2.05M |
|
948
PUT
EQT Corp
EQT
$33.4B
| $11.1M | 0.01% |
300,400
-53,300
| -15% | -$2.09M |
|
949
CALL
Leidos
LDOS
$13.9B
| $11.1M | 0.01% |
76,100
+52,000
| +216% | +$7.27M |
|
950
PUT
Macy's
M
$6.14B
| $11.1M | 0.01% |
577,100
-385,400
| -40% | -$7.36M |
|
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.