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 |
Amazon
AMZN
|
+$83.1M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37.2M |
| 3 |
Amgen
AMGN
|
+$30.5M |
| 4 |
Micron Technology
MU
|
+$28.8M |
| 5 |
Qualcomm
QCOM
|
+$18.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$29.5M |
| 2 |
Goldman Sachs
GS
|
+$27.8M |
| 3 |
Gilead Sciences
GILD
|
+$27.6M |
| 4 |
Booking.com
BKNG
|
+$25.4M |
| 5 |
AT&T
T
|
+$19.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 13.55% |
| 2 | Communication Services | 11.57% |
| 3 | Consumer Discretionary | 9.69% |
| 4 | Healthcare | 7.28% |
| 5 | Financials | 4.17% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1726
Manchester United
MANU
$3.91B
| $104K | ﹤0.01% |
6,411
+5,938
| +1,255% | +$98.3K |
|
1727
CALL
Pfizer
PFE
$140B
| $104K | ﹤0.01% |
1,698
-1,350
| -44% | -$42.6K |
|
1728
CALL
Viatris
VTRS
$20.1B
| $104K | ﹤0.01% |
1,903
-1,727
| -48% | -$66.3K |
|
|
MRO
1729
PUT
DELISTED
Marathon Oil Corporation
MRO
| $104K | ﹤0.01% |
872
-1,015
| -54% | -$14.2K |
|
|
WRK
1730
CALL
DELISTED
WestRock Company
WRK
| $104K | ﹤0.01% |
626
+325
| +108% | +$17.6K |
|
|
AKS
1731
CALL
DELISTED
AK Steel Holding Corp
AKS
| $104K | ﹤0.01% |
625
-790
| -56% | -$4.95K |
|
|
ICON
1732
DELISTED
Iconix Brand Group, Inc.
ICON
| $104K | ﹤0.01% |
1,511
+990
| +190% | +$67.3K |
|
|
FMSA
1733
PUT
DELISTED
Fairmount Santrol Holdings Inc.
FMSA
| $104K | ﹤0.01% |
429
+258
| +151% | +$1.34K |
|
1734
CALL
Brookdale Senior Living
BKD
$3.62B
| $103K | ﹤0.01% |
1,361
+73
| +6% | +$1.01K |
|
1735
Celanese
CE
$5.09B
| $103K | ﹤0.01% |
+1,090
| New | +$97.1K |
|
1736
PUT
Cenovus Energy
CVE
$54.6B
| $103K | ﹤0.01% |
781
+752
| +2,593% | +$6.98K |
|
1737
CALL
Icon
ICLR
$12.8B
| $103K | ﹤0.01% |
76
+21
| +38% | +$1.86K |
|
1738
Toll Brothers
TOL
$14B
| $103K | ﹤0.01% |
+2,620
| New | +$97.8K |
|
|
GAP
1739
CALL
The Gap Inc
GAP
$6.84B
| $103K | ﹤0.01% |
797
+349
| +78% | +$8.3K |
|
|
HTZ
1740
CALL
DELISTED
Hertz Global Holdings, Inc.
HTZ
| $103K | ﹤0.01% |
1,416
+311
| +28% | +$3.34K |
|
1741
PUT
Century Communities
CCS
$2B
| $102K | ﹤0.01% |
541
+355
| +191% | +$9.16K |
|
1742
CALL
Omeros
OMER
$709M
| $102K | ﹤0.01% |
247
+26
| +12% | +$454 |
|
1743
CALL
Rio Tinto
RIO
$148B
| $102K | ﹤0.01% |
1,119
-29
| -3% | -$1.16K |
|
|
CUDA
1744
CALL
DELISTED
Barracuda Networks, Inc.
CUDA
| $102K | ﹤0.01% |
604
+563
| +1,373% | +$12.4K |
|
|
CBF
1745
DELISTED
Capital Bank Financial Corp. Class A Common Stock
CBF
| $102K | ﹤0.01% |
2,682
+347
| +15% | +$13.7K |
|
1746
CALL
American Electric Power
AEP
$73.7B
| $101K | ﹤0.01% |
450
-46
| -9% | -$3.2K |
|
1747
CALL
Copa Holdings
CPA
$5.56B
| $101K | ﹤0.01% |
77
-142
| -65% | -$16.3K |
|
1748
Cytokinetics
CYTK
$11B
| $101K | ﹤0.01% |
8,408
-39,786
| -83% | -$553K |
|
1749
Invesco DB US Dollar Index Bearish Fund
UDN
$107M
| $101K | ﹤0.01% |
4,634
+3,500
| +309% | +$74.4K |
|
1750
CALL
Xerox
XRX
$337M
| $101K | ﹤0.01% |
422
+388
| +1,141% | +$11K |
|
Similar funds
Simplex Trading's Q2 2017 Portfolio in Review
As of Q2 2017, Simplex Trading held 7,527 positions worth $2.3B, down 0.39% from $2.31B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Simplex Trading withdrew a net $114M in Q2 2017, closing 1,474 positions and reducing 2,320 holdings. Its most notable exit was AT&T, an estimated $19.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 14% of assets, up from 9.7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amgen worth $32.3M.
- Simplex Trading's largest Q2 2017 buy was Amgen: 187,633 shares worth $32.3M.
- Simplex Trading added most to Amazon in Q2 2017, an estimated $83.1M increase.
- Simplex Trading's biggest Q2 2017 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $29.5M.
- Simplex Trading fully exited AT&T in Q2 2017, selling an estimated $19.6M.
- Simplex Trading's ten largest holdings make up 23% of its $2.3B portfolio in Q2 2017.
- Simplex Trading opened 1,408 new positions and closed 1,474 in Q2 2017.
- Simplex Trading's portfolio value fell 0.39% quarter-over-quarter to $2.3B.
Based on Simplex Trading's 13F filing for Q2 2017, filed 12 Jul 2017.