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 |
CELG
Celgene Corp
CELG
|
+$31.6M |
| 2 |
Citigroup
C
|
+$19.5M |
| 3 |
AGN
Allergan plc
AGN
|
+$18.4M |
| 4 |
Baidu
BIDU
|
+$18M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$81.3M |
| 2 |
NVIDIA
NVDA
|
+$60.2M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$48.2M |
| 4 |
Apple
AAPL
|
+$48.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$31.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 11.27% |
| 2 | Technology | 10.64% |
| 3 | Healthcare | 7.06% |
| 4 | Communication Services | 6.92% |
| 5 | Industrials | 5.66% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3501
CALL
Hilton Worldwide
HLT
$73.9B
| $16K | ﹤0.01% |
16
-1
| -6% | -$74 |
|
|
HOUS
3502
CALL
DELISTED
Anywhere Real Estate
HOUS
| $16K | ﹤0.01% |
368
-20
| -5% | -$580 |
|
3503
CALL
Hexcel
HXL
$8.25B
| $16K | ﹤0.01% |
97
+79
| +439% | +$4.8K |
|
3504
Integra LifeSciences
IART
$1.53B
| $16K | ﹤0.01% |
335
-523
| -61% | -$25.6K |
|
3505
CALL
Ingles Markets
IMKTA
$1.7B
| $16K | ﹤0.01% |
24
+6
| +33% | +$163 |
|
3506
Innoviva
INVA
$1.62B
| $16K | ﹤0.01% |
+1,171
| New | +$15.6K |
|
3507
CALL
Invesco
IVZ
$13B
| $16K | ﹤0.01% |
223
-65
| -23% | -$2.35K |
|
3508
State Street SPDR S&P Capital Markets ETF
KCE
$460M
| $16K | ﹤0.01% |
282
+82
| +41% | +$4.51K |
|
3509
CALL
Kirby Corp
KEX
$7.79B
| $16K | ﹤0.01% |
+62
| New | +$4.06K |
|
3510
CALL
Kinder Morgan
KMI
$70.5B
| $16K | ﹤0.01% |
589
-180
| -23% | -$3.23K |
|
3511
PUT
Kennametal
KMT
$2.7B
| $16K | ﹤0.01% |
173
+14
| +9% | +$624 |
|
3512
PUT
Vail Resorts
MTN
$5.54B
| $16K | ﹤0.01% |
118
+51
| +76% | +$11.4K |
|
3513
PUT
McEwen Inc
MUX
$1.02B
| $16K | ﹤0.01% |
13
+5
| +63% | +$101 |
|
3514
PUT
Neurocrine Biosciences
NBIX
$18.3B
| $16K | ﹤0.01% |
262
+134
| +105% | +$9.14K |
|
|
PNNT
3515
Pennant Park Investment Corp
PNNT
$221M
| $16K | ﹤0.01% |
2,329
+1,269
| +120% | +$9.4K |
|
3516
PUT
Phillips 66
PSX
$83.1B
| $16K | ﹤0.01% |
624
+142
| +29% | +$13.5K |
|
3517
CALL
Papa John's
PZZA
$1.03B
| $16K | ﹤0.01% |
+124
| New | +$7.72K |
|
3518
PUT
ALPS REIT Dividend Dogs ETF
RDOG
$11.7M
| $16K | ﹤0.01% |
486
+387
| +391% | +$17.4K |
|
3519
CALL
RPM International
RPM
$14.1B
| $16K | ﹤0.01% |
256
-136
| -35% | -$7.11K |
|
3520
PUT
Sally Beauty Holdings
SBH
$1.46B
| $16K | ﹤0.01% |
168
+32
| +24% | +$555 |
|
3521
CALL
Smart Sand
SND
$179M
| $16K | ﹤0.01% |
+154
| New | +$1.19K |
|
3522
PUT
Sony
SONY
$133B
| $16K | ﹤0.01% |
790
+630
| +394% | +$5.41K |
|
3523
PUT
Suncor Energy
SU
$75.5B
| $16K | ﹤0.01% |
379
-153
| -29% | -$5.32K |
|
3524
PUT
Ubiquiti
UI
$32.4B
| $16K | ﹤0.01% |
196
-1,054
| -84% | -$67.5K |
|
3525
PUT
Vulcan Materials
VMC
$37.3B
| $16K | ﹤0.01% |
194
+29
| +18% | +$3.54K |
|
Similar funds
Simplex Trading's Q4 2017 Portfolio in Review
As of Q4 2017, Simplex Trading held 7,407 positions worth $2.32B, down 5.1% from $2.45B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading withdrew a net $315M in Q4 2017, closing 1,460 positions and reducing 2,239 holdings. Its most notable exit was iShares 20+ Year Treasury Bond ETF, an estimated $21.1M position sold in full.
By sector, the portfolio is most concentrated in Consumer Discretionary at 11% of assets, down from 14% a quarter earlier, followed by Technology and Healthcare.
Against the trend, Simplex Trading opened a new position in Celgene Corp worth $29.2M.
- Simplex Trading's largest Q4 2017 buy was Celgene Corp: 280,194 shares worth $29.2M.
- Simplex Trading added most to Baidu in Q4 2017, an estimated $18M increase.
- Simplex Trading's biggest Q4 2017 reduction was Amazon, cutting an estimated $81.3M.
- Simplex Trading fully exited iShares 20+ Year Treasury Bond ETF in Q4 2017, selling an estimated $21.1M.
- Simplex Trading's ten largest holdings make up 17% of its $2.32B portfolio in Q4 2017.
- Simplex Trading opened 1,548 new positions and closed 1,460 in Q4 2017.
- Simplex Trading's portfolio value fell 5.1% quarter-over-quarter to $2.32B.
Based on Simplex Trading's 13F filing for Q4 2017, filed 10 Jan 2018.