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 | |
|---|---|---|---|---|---|---|
2651
CALL
Alight
ALIT
$497M
| $1.29M | ﹤0.01% |
8,760
+3,195
| +57% | +$532K |
|
2652
PUT
Harmony Gold Mining
HMY
$9.92B
| $1.29M | ﹤0.01% |
140,900
+115,900
| +464% | +$1.04M |
|
2653
PUT
Brookfield
BN
$102B
| $1.29M | ﹤0.01% |
46,650
+19,200
| +70% | +$535K |
|
2654
PUT
B2Gold
BTG
$5.16B
| $1.29M | ﹤0.01% |
477,800
+382,200
| +400% | +$1.03M |
|
2655
iShares MSCI South Korea ETF
EWY
$21.7B
| $1.29M | ﹤0.01% |
19,527
+13,727
| +237% | +$884K |
|
2656
CALL
OR Royalties Inc
OR
$5.47B
| $1.29M | ﹤0.01% |
82,800
+59,700
| +258% | +$967K |
|
2657
PUT
Radian Group
RDN
$5.14B
| $1.29M | ﹤0.01% |
41,500
-54,500
| -57% | -$1.68M |
|
2658
CALL
PubMatic
PUBM
$581M
| $1.29M | ﹤0.01% |
63,500
+400
| +0.6% | +$8.91K |
|
2659
CALL
Biomea Fusion
BMEA
$90.4M
| $1.29M | ﹤0.01% |
286,000
+163,700
| +134% | +$1.66M |
|
2660
Healthcare Realty
HR
$7.42B
| $1.28M | ﹤0.01% |
78,022
-140,687
| -64% | -$2.15M |
|
2661
PUT
Asana
ASAN
$1.58B
| $1.28M | ﹤0.01% |
91,600
-86,700
| -49% | -$1.24M |
|
|
DQ
2662
PUT
Daqo New Energy
DQ
$790M
| $1.28M | ﹤0.01% |
87,800
+24,000
| +38% | +$505K |
|
2663
CALL
Eversource Energy
ES
$28.2B
| $1.28M | ﹤0.01% |
22,600
+700
| +3% | +$41.5K |
|
2664
ZTO Express
ZTO
$18.2B
| $1.28M | ﹤0.01% |
61,573
-95,519
| -61% | -$2.09M |
|
2665
CALL
Polaris
PII
$4.15B
| $1.28M | ﹤0.01% |
16,300
-25,000
| -61% | -$2.12M |
|
2666
PUT
Weibo
WB
$1.9B
| $1.28M | ﹤0.01% |
166,200
+123,700
| +291% | +$1.08M |
|
2667
CALL
BWX Technologies
BWXT
$16B
| $1.27M | ﹤0.01% |
13,400
-15,100
| -53% | -$1.4M |
|
2668
CALL
Onto Innovation
ONTO
$13.6B
| $1.27M | ﹤0.01% |
5,800
-6,900
| -54% | -$1.43M |
|
2669
JB Hunt Transport Services
JBHT
$27.1B
| $1.27M | ﹤0.01% |
+7,953
| New | +$1.33M |
|
2670
PUT
American Coastal Insurance
ACIC
$498M
| $1.27M | ﹤0.01% |
120,500
-14,000
| -10% | -$157K |
|
2671
PUT
Alta Equipment Group
ALTG
$210M
| $1.27M | ﹤0.01% |
158,100
+25,700
| +19% | +$260K |
|
2672
Ollie's Bargain Outlet
OLLI
$4.01B
| $1.27M | ﹤0.01% |
12,938
+8,117
| +168% | +$646K |
|
2673
FirstCash
FCFS
$8.55B
| $1.27M | ﹤0.01% |
+12,100
| New | +$1.43M |
|
2674
CALL
Fiverr
FVRR
$376M
| $1.27M | ﹤0.01% |
54,200
-10,800
| -17% | -$243K |
|
2675
CALL
Smith & Wesson
SWBI
$655M
| $1.27M | ﹤0.01% |
88,500
-18,500
| -17% | -$304K |
|
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.