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 | |
|---|---|---|---|---|---|---|
3351
CALL
G-III Apparel Group
GIII
$1.52B
| $665K | ﹤0.01% |
24,600
-16,300
| -40% | -$457K |
|
3352
Travere Therapeutics
TVTX
$5.27B
| $665K | ﹤0.01% |
80,989
+69,591
| +611% | +$469K |
|
3353
PUT
Full Truck Alliance
YMM
$9.66B
| $664K | ﹤0.01% |
82,700
+41,600
| +101% | +$354K |
|
3354
PUT
Photronics
PLAB
$1.76B
| $663K | ﹤0.01% |
26,900
-8,900
| -25% | -$241K |
|
3355
CALL
Lear
LEA
$7.26B
| $662K | ﹤0.01% |
5,800
-2,200
| -28% | -$282K |
|
3356
CALL
Bright Horizons
BFAM
$4.1B
| $660K | ﹤0.01% |
6,000
-2,200
| -27% | -$238K |
|
3357
CALL
Krispy Kreme
DNUT
$562M
| $660K | ﹤0.01% |
61,400
+4,600
| +8% | +$57.1K |
|
3358
CALL
First Interstate BancSystem
FIBK
$3.67B
| $660K | ﹤0.01% |
23,800
+17,800
| +297% | +$471K |
|
3359
CALL
Paylocity
PCTY
$6.97B
| $659K | ﹤0.01% |
5,000
+2,800
| +127% | +$433K |
|
3360
InterDigital
IDCC
$6.7B
| $657K | ﹤0.01% |
+5,644
| New | +$603K |
|
3361
CALL
Remitly
RELY
$4.77B
| $656K | ﹤0.01% |
54,200
+22,600
| +72% | +$351K |
|
|
HIMX
3362
CALL
Himax Technologies
HIMX
$2.22B
| $655K | ﹤0.01% |
82,500
+81,300
| +6,775% | +$498K |
|
3363
PUT
Albertsons Companies
ACI
$5.57B
| $653K | ﹤0.01% |
33,100
-283,200
| -90% | -$5.78M |
|
3364
CALL
Azenta
AZTA
$1.27B
| $652K | ﹤0.01% |
12,400
-2,900
| -19% | -$155K |
|
3365
CALL
Erie Indemnity
ERIE
$11.9B
| $652K | ﹤0.01% |
1,800
+200
| +13% | +$76K |
|
3366
CALL
Alphatec Holdings
ATEC
$1.33B
| $651K | ﹤0.01% |
62,300
+6,700
| +12% | +$78K |
|
|
IRBT
3367
PUT
DELISTED
iRobot
IRBT
| $651K | ﹤0.01% |
71,500
-146,300
| -67% | -$1.35M |
|
3368
Vivid Seats
SEAT
$84.8M
| $650K | ﹤0.01% |
5,660
+1,265
| +29% | +$138K |
|
|
TWO
3369
Two Harbors Investment
TWO
$1.27B
| $650K | ﹤0.01% |
+49,263
| New | +$627K |
|
3370
PUT
XP
XP
$8.65B
| $649K | ﹤0.01% |
36,900
-196,300
| -84% | -$4.06M |
|
|
TUP
3371
PUT
DELISTED
Tupperware Brands Corporation
TUP
| $649K | ﹤0.01% |
463,700
+253,100
| +120% | +$358K |
|
3372
CALL
American Eagle Outfitters
AEO
$2.98B
| $648K | ﹤0.01% |
32,500
-65,800
| -67% | -$1.5M |
|
|
HPP
3373
Hudson Pacific Properties
HPP
$794M
| $648K | ﹤0.01% |
19,259
-19,519
| -50% | -$736K |
|
3374
Petco
WOOF
$777M
| $648K | ﹤0.01% |
+171,550
| New | +$438K |
|
3375
CALL
Highwoods Properties
HIW
$3.73B
| $646K | ﹤0.01% |
24,600
+10,900
| +80% | +$279K |
|
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.