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 | |
|---|---|---|---|---|---|---|
3426
CALL
Yelp
YELP
$1.45B
| $617K | ﹤0.01% |
16,700
-47,400
| -74% | -$1.82M |
|
3427
CALL
Brown & Brown
BRO
$23.6B
| $616K | ﹤0.01% |
6,900
-4,600
| -40% | -$399K |
|
|
HOLX
3428
PUT
DELISTED
Hologic
HOLX
| $616K | ﹤0.01% |
8,300
-42,000
| -83% | -$3.15M |
|
3429
CALL
Sanmina
SANM
$11.2B
| $616K | ﹤0.01% |
9,300
-13,000
| -58% | -$831K |
|
|
VRN
3430
PUT
DELISTED
Veren
VRN
| $616K | ﹤0.01% |
78,300
+7,400
| +10% | +$62.3K |
|
3431
CALL
LiveRamp
RAMP
$2.3B
| $615K | ﹤0.01% |
19,900
+2,600
| +15% | +$83.5K |
|
|
LUCK
3432
PUT
Lucky Strike Entertainment
LUCK
$963M
| $615K | ﹤0.01% |
42,500
-70,400
| -62% | -$885K |
|
3433
CALL
Arhaus
ARHS
$1.12B
| $614K | ﹤0.01% |
36,300
+7,300
| +25% | +$118K |
|
3434
Cognyte Software
CGNT
$642M
| $613K | ﹤0.01% |
80,284
+71,476
| +811% | +$534K |
|
3435
CALL
Littelfuse
LFUS
$10.2B
| $613K | ﹤0.01% |
+2,400
| New | +$594K |
|
3436
CALL
MINISO
MNSO
$3.72B
| $612K | ﹤0.01% |
32,100
-13,500
| -30% | -$298K |
|
3437
CALL
Life Time Group Holdings
LTH
$9.74B
| $611K | ﹤0.01% |
32,500
+28,300
| +674% | +$447K |
|
3438
TTM Technologies
TTMI
$12.8B
| $611K | ﹤0.01% |
31,489
+28,915
| +1,123% | +$494K |
|
3439
CALL
Voya Financial
VOYA
$8.98B
| $611K | ﹤0.01% |
8,600
-28,500
| -77% | -$2.05M |
|
|
ANSS
3440
PUT
DELISTED
Ansys
ANSS
| $610K | ﹤0.01% |
1,900
-2,900
| -60% | -$950K |
|
3441
PUT
Burford Capital
BUR
$922M
| $610K | ﹤0.01% |
46,800
+800
| +2% | +$11.7K |
|
3442
CALL
Portillo's
PTLO
$338M
| $610K | ﹤0.01% |
62,800
+7,800
| +14% | +$86.8K |
|
3443
CALL
Coeur Mining
CDE
$15.8B
| $609K | ﹤0.01% |
108,500
+10,800
| +11% | +$55.7K |
|
|
JKS
3444
PUT
JinkoSolar
JKS
$799M
| $609K | ﹤0.01% |
29,400
-3,400
| -10% | -$83.8K |
|
3445
Aaon
AAON
$8.27B
| $608K | ﹤0.01% |
+6,973
| New | +$569K |
|
3446
CALL
Medifast
MED
$110M
| $608K | ﹤0.01% |
27,900
+17,900
| +179% | +$477K |
|
3447
CALL
Aurora
AUR
$12.2B
| $606K | ﹤0.01% |
218,900
-44,800
| -17% | -$124K |
|
3448
PUT
Huazhu Hotels Group
HTHT
$12.9B
| $606K | ﹤0.01% |
18,200
+8,600
| +90% | +$324K |
|
3449
CALL
Neogen
NEOG
$2.03B
| $606K | ﹤0.01% |
38,800
+9,300
| +32% | +$129K |
|
3450
ARKO Corp
ARKO
$897M
| $605K | ﹤0.01% |
96,562
+93,879
| +3,499% | +$505K |
|
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.