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 | |
|---|---|---|---|---|---|---|
|
TBCH
3551
PUT
Turtle Beach Corp
TBCH
$245M
| $559K | ﹤0.01% |
39,000
-100,300
| -72% | -$1.56M |
|
3552
CALL
Fortrea Holdings
FTRE
$1.82B
| $557K | ﹤0.01% |
23,900
-28,200
| -54% | -$875K |
|
3553
EPR Properties
EPR
$4.85B
| $556K | ﹤0.01% |
13,247
-1,148
| -8% | -$47.2K |
|
3554
CALL
Ligand Pharmaceuticals
LGND
$5.96B
| $556K | ﹤0.01% |
6,600
-10,100
| -60% | -$804K |
|
|
LNW
3555
PUT
DELISTED
Light & Wonder
LNW
| $555K | ﹤0.01% |
5,300
+1,300
| +33% | +$124K |
|
|
PLL
3556
PUT
DELISTED
Piedmont Lithium
PLL
| $555K | ﹤0.01% |
55,700
+6,000
| +12% | +$76.6K |
|
3557
CALL
Arch Capital
ACGL
$36.3B
| $554K | ﹤0.01% |
5,500
-8,100
| -60% | -$788K |
|
3558
CALL
Advanced Energy
AEIS
$11.7B
| $554K | ﹤0.01% |
5,100
-6,900
| -58% | -$706K |
|
3559
PUT
Algoma Steel
ASTL
$463M
| $554K | ﹤0.01% |
79,600
+2,600
| +3% | +$20.1K |
|
3560
PUT
UFP Technologies
UFPT
$1.92B
| $554K | ﹤0.01% |
+2,100
| New | +$519K |
|
|
PENG
3561
Penguin Solutions Inc
PENG
$2.69B
| $554K | ﹤0.01% |
24,238
+12,745
| +111% | +$265K |
|
3562
O-I Glass
OI
$1.41B
| $552K | ﹤0.01% |
+49,610
| New | +$670K |
|
3563
PUT
Pagaya Technologies
PGY
$1.41B
| $552K | ﹤0.01% |
43,300
+12,900
| +42% | +$145K |
|
3564
Warby Parker
WRBY
$3.05B
| $552K | ﹤0.01% |
34,392
+11,273
| +49% | +$167K |
|
3565
Invesco CurrencyShares Canadian Dollar Trust
FXC
$72.6M
| $551K | ﹤0.01% |
+7,704
| New | +$551K |
|
3566
PUT
Oshkosh
OSK
$9.66B
| $551K | ﹤0.01% |
5,100
-3,600
| -41% | -$416K |
|
3567
PUT
Host Hotels & Resorts
HST
$17.1B
| $550K | ﹤0.01% |
30,600
-66,100
| -68% | -$1.24M |
|
3568
PUT
Savara
SVRA
$1.11B
| $550K | ﹤0.01% |
+136,700
| New | +$608K |
|
3569
PUT
Jackson Financial
JXN
$8.44B
| $549K | ﹤0.01% |
7,400
-10,500
| -59% | -$750K |
|
3570
PUT
Marqeta
MQ
$1.85B
| $548K | ﹤0.01% |
25,025
-8,450
| -25% | -$186K |
|
3571
PUT
Capital Southwest
CSWC
$1.46B
| $547K | ﹤0.01% |
21,000
+19,600
| +1,400% | +$503K |
|
3572
Stanley Black & Decker
SWK
$14.6B
| $547K | ﹤0.01% |
6,849
-34,043
| -83% | -$3M |
|
3573
CALL
Atmus Filtration Technologies
ATMU
$4.43B
| $546K | ﹤0.01% |
19,000
-198,400
| -91% | -$6.02M |
|
|
CRDL
3574
CALL
Cardiol Therapeutics
CRDL
$134M
| $546K | ﹤0.01% |
270,400
+188,600
| +231% | +$400K |
|
3575
CALL
PAR Technology
PAR
$682M
| $546K | ﹤0.01% |
11,600
-23,300
| -67% | -$1.03M |
|
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.