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 | |
|---|---|---|---|---|---|---|
701
PUT
Travelers Companies
TRV
$78.7B
| $16.9M | 0.01% |
83,300
+32,600
| +64% | +$7.01M |
|
702
CALL
Franco-Nevada
FNV
$41.2B
| $16.8M | 0.01% |
142,100
-53,300
| -27% | -$6.48M |
|
703
CALL
Prologis
PLD
$134B
| $16.8M | 0.01% |
149,900
-15,300
| -9% | -$1.69M |
|
704
CALL
NIO
NIO
$11.6B
| $16.8M | 0.01% |
4,046,300
+62,100
| +2% | +$294K |
|
705
CALL
Mobileye
MBLY
$6.33B
| $16.8M | 0.01% |
596,600
+174,800
| +41% | +$5.06M |
|
|
NVO
706
Novo Nordisk
NVO
$216B
| $16.8M | 0.01% |
117,367
-72,289
| -38% | -$9.58M |
|
707
PUT
Caesars Entertainment
CZR
$6.08B
| $16.7M | 0.01% |
420,200
-61,200
| -13% | -$2.3M |
|
708
PUT
Twilio
TWLO
$27.5B
| $16.7M | 0.01% |
293,700
-189,800
| -39% | -$11.2M |
|
709
CALL
Ralph Lauren
RL
$22.4B
| $16.6M | 0.01% |
94,700
-51,400
| -35% | -$8.88M |
|
710
PUT
The Mosaic Company
MOS
$7.15B
| $16.6M | 0.01% |
573,000
+159,300
| +39% | +$4.8M |
|
711
CALL
Upstart Holdings
UPST
$2.61B
| $16.5M | 0.01% |
701,300
-454,400
| -39% | -$11M |
|
712
Berkshire Hathaway Class B
BRK.B
$1.06T
| $16.5M | 0.01% |
40,510
-3,051
| -7% | -$1.25M |
|
|
CNR
713
PUT
Core Natural Resources Inc
CNR
$4.43B
| $16.4M | 0.01% |
161,100
+58,600
| +57% | +$5.33M |
|
714
CALL
Mondelez International
MDLZ
$77.4B
| $16.4M | 0.01% |
250,800
+13,100
| +6% | +$899K |
|
715
PUT
Cadence Design Systems
CDNS
$92.4B
| $16.4M | 0.01% |
53,200
-2,400
| -4% | -$711K |
|
716
CALL
iShares Gold Trust
IAU
$63B
| $16.3M | 0.01% |
371,900
+73,100
| +24% | +$3.23M |
|
717
CALL
Core Scientific
CORZ
$7.65B
| $16.3M | 0.01% |
1,755,200
+1,207,600
| +221% | +$6.17M |
|
718
PUT
Floor & Decor
FND
$5.7B
| $16.3M | 0.01% |
164,200
-138,200
| -46% | -$15.9M |
|
719
PUT
Reddit
RDDT
$33B
| $16.3M | 0.01% |
254,900
-30,200
| -11% | -$1.59M |
|
720
CALL
J.M. Smucker
SJM
$12.5B
| $16.3M | 0.01% |
149,100
+10,900
| +8% | +$1.23M |
|
721
CALL
Zoetis
ZTS
$31.3B
| $16.2M | 0.01% |
93,600
+24,000
| +34% | +$3.99M |
|
722
CALL
International Paper
IP
$20.3B
| $16.2M | 0.01% |
375,900
+246,300
| +190% | +$10M |
|
723
PUT
Zimmer Biomet
ZBH
$17.4B
| $16.2M | 0.01% |
149,100
+86,800
| +139% | +$10.2M |
|
724
PUT
Corning
GLW
$135B
| $16.1M | 0.01% |
415,500
+141,200
| +51% | +$4.93M |
|
725
PUT
Nu Holdings
NU
$69.2B
| $16.1M | 0.01% |
1,251,800
+682,900
| +120% | +$7.95M |
|
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.