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 | |
|---|---|---|---|---|---|---|
2726
PUT
MakeMyTrip
MMYT
$4.67B
| $1.21M | ﹤0.01% |
14,400
-4,200
| -23% | -$314K |
|
2727
Freshworks
FRSH
$2.84B
| $1.21M | ﹤0.01% |
95,288
+78,376
| +463% | +$1.17M |
|
2728
Jefferies Financial Group
JEF
$12.9B
| $1.21M | ﹤0.01% |
24,273
+16,929
| +231% | +$760K |
|
2729
Virtu Financial
VIRT
$5.2B
| $1.21M | ﹤0.01% |
53,776
-51,028
| -49% | -$1.14M |
|
2730
CALL
Tyler Technologies
TYL
$12.2B
| $1.21M | ﹤0.01% |
2,400
-20,700
| -90% | -$9.54M |
|
2731
PUT
Dorian LPG
LPG
$1.94B
| $1.2M | ﹤0.01% |
28,700
+11,300
| +65% | +$486K |
|
|
ARR
2732
CALL
Armour Residential REIT
ARR
$2.02B
| $1.2M | ﹤0.01% |
62,100
+33,400
| +116% | +$636K |
|
|
CTLT
2733
CALL
DELISTED
CATALENT, INC.
CTLT
| $1.2M | ﹤0.01% |
21,400
-1,200
| -5% | -$66.9K |
|
|
TEN
2734
Tsakos Energy Navigation Ltd
TEN
$1.19B
| $1.2M | ﹤0.01% |
41,066
-2,995
| -7% | -$84.1K |
|
2735
PUT
NextDecade
NEXT
$1.85B
| $1.2M | ﹤0.01% |
151,300
-1,500
| -1% | -$10.3K |
|
|
EH
2736
EHang Holdings
EH
$372M
| $1.2M | ﹤0.01% |
88,271
+3,264
| +4% | +$55.2K |
|
2737
PUT
Arrow Electronics
ARW
$10.9B
| $1.2M | ﹤0.01% |
9,900
-9,000
| -48% | -$1.15M |
|
2738
PUT
Geron
GERN
$911M
| $1.2M | ﹤0.01% |
281,900
+68,600
| +32% | +$267K |
|
2739
CALL
TransUnion
TRU
$14.8B
| $1.19M | ﹤0.01% |
16,100
-8,100
| -33% | -$604K |
|
2740
PUT
Melco Resorts & Entertainment
MLCO
$2.1B
| $1.19M | ﹤0.01% |
159,800
+5,400
| +3% | +$40.8K |
|
2741
CALL
WEC Energy
WEC
$37.7B
| $1.19M | ﹤0.01% |
15,200
+1,100
| +8% | +$89.4K |
|
|
BBBY
2742
PUT
Bed Bath & Beyond
BBBY
$473M
| $1.19M | ﹤0.01% |
99,880
+7,040
| +8% | +$125K |
|
2743
PUT
DoubleVerify
DV
$1.62B
| $1.19M | ﹤0.01% |
61,000
-251,900
| -81% | -$6.09M |
|
2744
Parker-Hannifin
PH
$125B
| $1.19M | ﹤0.01% |
+2,348
| New | +$1.26M |
|
2745
PUT
BuzzFeed
BZFD
$92.4M
| $1.19M | ﹤0.01% |
+430,000
| New | +$908K |
|
2746
Genuine Parts
GPC
$17.1B
| $1.19M | ﹤0.01% |
+8,581
| New | +$1.28M |
|
2747
CALL
Blue Owl Capital
OWL
$6.39B
| $1.19M | ﹤0.01% |
66,800
-15,800
| -19% | -$290K |
|
|
VRNA
2748
CALL
DELISTED
Verona Pharma
VRNA
| $1.19M | ﹤0.01% |
82,000
+72,900
| +801% | +$1.06M |
|
2749
CALL
Canadian Solar
CSIQ
$906M
| $1.18M | ﹤0.01% |
80,300
-14,900
| -16% | -$252K |
|
2750
-1x Short VIX Futures ETF
SVIX
$182M
| $1.18M | ﹤0.01% |
24,790
+18,619
| +302% | +$804K |
|
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.