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 | |
|---|---|---|---|---|---|---|
3826
PUT
Novanta
NOVT
$5.04B
| $424K | ﹤0.01% |
2,600
-800
| -24% | -$130K |
|
3827
CALL
EXL Service
EXLS
$4.66B
| $423K | ﹤0.01% |
13,500
-1,900
| -12% | -$57K |
|
3828
CALL
Globalstar
GSAT
$10.2B
| $423K | ﹤0.01% |
25,213
-2,707
| -10% | -$48.8K |
|
3829
CALL
Inovio Pharmaceuticals
INO
$84.7M
| $423K | ﹤0.01% |
52,400
-6,100
| -10% | -$64.2K |
|
3830
Amplify Alternative Harvest ETF
MJ
$98.2M
| $422K | ﹤0.01% |
10,605
+9,709
| +1,084% | +$453K |
|
|
SAND
3831
DELISTED
Sandstorm Gold
SAND
| $422K | ﹤0.01% |
77,731
-38,582
| -33% | -$213K |
|
|
EVRI
3832
CALL
DELISTED
Everi Holdings
EVRI
| $421K | ﹤0.01% |
50,200
+42,100
| +520% | +$344K |
|
|
KOCG
3833
CALL
DELISTED
FIS Knights of Columbus Global Belief ETF
KOCG
| $421K | ﹤0.01% |
+8,400
| New | +$215K |
|
3834
CALL
McEwen Inc
MUX
$1.03B
| $421K | ﹤0.01% |
45,900
-100,000
| -69% | -$1.1M |
|
|
CIO
3835
DELISTED
City Office REIT
CIO
| $420K | ﹤0.01% |
84,496
+79,466
| +1,580% | +$382K |
|
|
HOLX
3836
DELISTED
Hologic
HOLX
| $420K | ﹤0.01% |
+5,670
| New | +$425K |
|
3837
Stride
LRN
$4.08B
| $420K | ﹤0.01% |
5,959
-12,694
| -68% | -$847K |
|
3838
PUT
Invesco DB Base Metals Fund
DBB
$305M
| $419K | ﹤0.01% |
24,200
-39,800
| -62% | -$804K |
|
3839
Amylyx Pharmaceuticals
AMLX
$2.17B
| $418K | ﹤0.01% |
220,517
+138,410
| +169% | +$268K |
|
|
SII
3840
PUT
Sprott
SII
$2.73B
| $418K | ﹤0.01% |
10,100
-8,500
| -46% | -$357K |
|
|
DQ
3841
CALL
Daqo New Energy
DQ
$802M
| $417K | ﹤0.01% |
28,600
-68,000
| -70% | -$1.43M |
|
3842
HighPeak Energy
HPK
$811M
| $417K | ﹤0.01% |
29,695
-9,456
| -24% | -$140K |
|
3843
CALL
B&G Foods
BGS
$297M
| $416K | ﹤0.01% |
51,500
-11,200
| -18% | -$111K |
|
3844
PUT
Biohaven
BHVN
$2.07B
| $416K | ﹤0.01% |
12,000
+11,100
| +1,233% | +$439K |
|
3845
RPC Inc
RES
$1.14B
| $416K | ﹤0.01% |
66,714
+16,626
| +33% | +$116K |
|
|
SLNO
3846
CALL
DELISTED
Soleno Therapeutics
SLNO
| $416K | ﹤0.01% |
10,200
+3,800
| +59% | +$161K |
|
3847
PUT
Triumph Financial Inc
TFIN
$1.84B
| $416K | ﹤0.01% |
+5,100
| New | +$380K |
|
|
FOLD
3848
CALL
DELISTED
Amicus Therapeutics
FOLD
| $415K | ﹤0.01% |
41,900
+6,700
| +19% | +$68.8K |
|
3849
PUT
Intrepid Potash
IPI
$474M
| $414K | ﹤0.01% |
17,700
-97,000
| -85% | -$2.23M |
|
|
PPL
3850
PUT
PPL Corp
PPL
$27.3B
| $414K | ﹤0.01% |
15,000
-9,500
| -39% | -$267K |
|
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.