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 | |
|---|---|---|---|---|---|---|
3651
State Street SPDR Bloomberg High Yield Bond ETF
JNK
$7.06B
| $506K | ﹤0.01% |
5,371
+142
| +3% | +$13.3K |
|
3652
Alamos Gold
AGI
$12.1B
| $505K | ﹤0.01% |
32,265
+27,985
| +654% | +$438K |
|
3653
VanEck JP Morgan EM Local Currency Bond ETF
EMLC
$4.78B
| $505K | ﹤0.01% |
21,240
+8,745
| +70% | +$211K |
|
3654
First Trust Dow Jones Internet Index Fund ETF
FDN
$5B
| $505K | ﹤0.01% |
2,469
+2,434
| +6,954% | +$489K |
|
3655
PUT
Kinetik
KNTK
$3.6B
| $505K | ﹤0.01% |
12,200
+12,100
| +12,100% | +$480K |
|
3656
ProShares Ultra Bloomberg Natural Gas
BOIL
$325M
| $504K | ﹤0.01% |
+3,219
| New | +$537K |
|
|
STKL
3657
DELISTED
SunOpta
STKL
| $504K | ﹤0.01% |
93,348
+81,453
| +685% | +$479K |
|
3658
PUT
ITT
ITT
$17.8B
| $503K | ﹤0.01% |
3,900
-6,400
| -62% | -$840K |
|
3659
CALL
Sabra Healthcare REIT
SBRA
$5.63B
| $503K | ﹤0.01% |
32,700
+19,100
| +140% | +$273K |
|
|
PPLI
3660
CALL
People Inc
PPLI
$3.18B
| $501K | ﹤0.01% |
13,043
-13,166
| -50% | -$544K |
|
3661
iShares Global Clean Energy ETF
ICLN
$2.27B
| $501K | ﹤0.01% |
37,648
+15,516
| +70% | +$217K |
|
3662
KBR
KBR
$4.77B
| $501K | ﹤0.01% |
+7,817
| New | +$505K |
|
3663
CALL
Lumen
LUMN
$6.31B
| $501K | ﹤0.01% |
456,000
-4,500
| -1% | -$5.71K |
|
3664
Aptiv
APTV
$12.4B
| $500K | ﹤0.01% |
+7,103
| New | +$546K |
|
3665
PUT
Ero Copper
ERO
$2.66B
| $500K | ﹤0.01% |
23,400
-12,100
| -34% | -$254K |
|
3666
PUT
ChargePoint
CHPT
$137M
| $499K | ﹤0.01% |
16,550
-11,220
| -40% | -$365K |
|
3667
Global X Copper Miners ETF NEW
COPX
$7.09B
| $499K | ﹤0.01% |
+11,084
| New | +$516K |
|
3668
CALL
MSC Industrial Direct
MSM
$7.02B
| $499K | ﹤0.01% |
6,300
+6,000
| +2,000% | +$533K |
|
3669
nVent Electric
NVT
$22.8B
| $499K | ﹤0.01% |
6,516
-15,955
| -71% | -$1.24M |
|
3670
Logitech
LOGI
$15.6B
| $498K | ﹤0.01% |
5,149
-839
| -14% | -$75.5K |
|
3671
Rocket Lab Corp
RKLB
$39.9B
| $498K | ﹤0.01% |
103,848
+53,905
| +108% | +$225K |
|
3672
CALL
A10 Networks
ATEN
$2.32B
| $497K | ﹤0.01% |
35,900
+30,900
| +618% | +$440K |
|
3673
CALL
Mama's Creations
MAMA
$818M
| $497K | ﹤0.01% |
73,800
+67,700
| +1,110% | +$412K |
|
3674
PUT
Charles River Laboratories
CRL
$11.4B
| $495K | ﹤0.01% |
2,400
-13,500
| -85% | -$3.06M |
|
|
LSEA
3675
PUT
DELISTED
Landsea Homes
LSEA
| $495K | ﹤0.01% |
53,900
+47,200
| +704% | +$501K |
|
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.