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 | |
|---|---|---|---|---|---|---|
3676
CALL
uniQure
QURE
$2.45B
| $495K | ﹤0.01% |
110,500
+51,200
| +86% | +$249K |
|
3677
PUT
Universal Insurance Holdings
UVE
$1.23B
| $495K | ﹤0.01% |
26,400
+6,500
| +33% | +$126K |
|
3678
PUT
Viper Energy
VNOM
$8.31B
| $495K | ﹤0.01% |
13,200
-1,300
| -9% | -$49.4K |
|
|
BASE
3679
CALL
DELISTED
Couchbase
BASE
| $494K | ﹤0.01% |
27,100
+5,500
| +25% | +$128K |
|
3680
Zai Lab
ZLAB
$2.11B
| $494K | ﹤0.01% |
28,530
-11,097
| -28% | -$195K |
|
3681
Bumble
BMBL
$398M
| $493K | ﹤0.01% |
46,980
-12,351
| -21% | -$135K |
|
3682
CALL
Gartner
IT
$10.5B
| $493K | ﹤0.01% |
1,100
-1,200
| -52% | -$534K |
|
3683
Manchester United
MANU
$4.02B
| $493K | ﹤0.01% |
30,584
-24,805
| -45% | -$395K |
|
3684
PUT
Huntington Ingalls Industries
HII
$11.8B
| $492K | ﹤0.01% |
2,000
-300
| -13% | -$78K |
|
|
PWSC
3685
CALL
DELISTED
PowerSchool Holdings, Inc.
PWSC
| $492K | ﹤0.01% |
22,000
+21,800
| +10,900% | +$440K |
|
3686
PUT
Bioventus
BVS
$882M
| $491K | ﹤0.01% |
85,500
+33,400
| +64% | +$183K |
|
3687
PUT
Harmony Biosciences
HRMY
$2.06B
| $491K | ﹤0.01% |
16,300
-9,700
| -37% | -$292K |
|
3688
CALL
Ramaco Resources Class A
METC
$631M
| $491K | ﹤0.01% |
40,827
-90,439
| -69% | -$1.26M |
|
3689
PUT
Ocular Therapeutix
OCUL
$1.83B
| $491K | ﹤0.01% |
71,800
-115,800
| -62% | -$715K |
|
3690
CALL
RenaissanceRe
RNR
$13.9B
| $491K | ﹤0.01% |
2,200
-1,300
| -37% | -$291K |
|
3691
PUT
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$159M
| $491K | ﹤0.01% |
93,750
+14,700
| +19% | +$732K |
|
3692
Vipshop
VIPS
$7.14B
| $490K | ﹤0.01% |
+37,683
| New | +$599K |
|
3693
CALL
Fidelity National Financial
FNF
$14.5B
| $489K | ﹤0.01% |
9,900
-2,900
| -23% | -$146K |
|
3694
Murphy Oil
MUR
$5.26B
| $489K | ﹤0.01% |
11,871
-25,371
| -68% | -$1.11M |
|
3695
CALL
MaxLinear
MXL
$5.38B
| $489K | ﹤0.01% |
24,300
+10,200
| +72% | +$201K |
|
3696
PUT
OR Royalties Inc
OR
$5.5B
| $489K | ﹤0.01% |
31,400
-3,000
| -9% | -$48.6K |
|
|
TGNA
3697
CALL
DELISTED
TEGNA Inc
TGNA
| $489K | ﹤0.01% |
35,100
+13,300
| +61% | +$188K |
|
3698
CALL
Brookfield Infrastructure Partners
BIP
$19.1B
| $488K | ﹤0.01% |
17,800
+2,200
| +14% | +$62.7K |
|
3699
Opko Health
OPK
$1.28B
| $488K | ﹤0.01% |
390,507
+116,956
| +43% | +$152K |
|
3700
Ferrari
RACE
$68.5B
| $488K | ﹤0.01% |
1,195
-7,240
| -86% | -$3.01M |
|
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.