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 |
Gilead Sciences
GILD
|
+$17.3M |
| 2 |
Apple
AAPL
|
+$15.2M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$14.9M |
| 4 |
Booking.com
BKNG
|
+$14.7M |
| 5 |
Wells Fargo
WFC
|
+$12.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$38.3M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
+$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
+$12.6M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
+$10.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.39% |
| 2 | Healthcare | 8.28% |
| 3 | Consumer Discretionary | 6.84% |
| 4 | Technology | 6.06% |
| 5 | Financials | 4.39% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
726
PUT
Pfizer
PFE
$141B
| $326K | 0.02% |
2,004
-1,143
| -36% | -$38.2K |
|
|
CHK
727
PUT
DELISTED
Chesapeake Energy Corporation
CHK
| $326K | 0.02% |
9
+2
| +29% | +$2.31K |
|
728
Abercrombie & Fitch
ANF
$4.27B
| $325K | 0.02% |
20,478
+6,155
| +43% | +$119K |
|
|
EXAS
729
DELISTED
Exact Sciences
EXAS
| $324K | 0.02% |
17,468
-2,426
| -12% | -$42.8K |
|
730
PUT
FedEx
FDX
$76.6B
| $324K | 0.02% |
2,269
+591
| +35% | +$96.8K |
|
|
IRBT
731
DELISTED
iRobot
IRBT
| $324K | 0.02% |
+7,384
| New | +$289K |
|
732
Verisk Analytics
VRSK
$25.2B
| $324K | 0.02% |
3,991
+3,054
| +326% | +$253K |
|
733
CALL
Cirrus Logic
CRUS
$7.04B
| $323K | 0.02% |
253
-118
| -32% | -$5.67K |
|
734
AvalonBay Communities
AVB
$27B
| $322K | 0.02% |
+1,815
| New | +$327K |
|
|
MOMO
735
Hello Group
MOMO
$876M
| $321K | 0.02% |
14,309
+12,986
| +982% | +$230K |
|
736
PUT
Lockheed Martin
LMT
$119B
| $319K | 0.02% |
2,173
+1,590
| +273% | +$398K |
|
|
ETP
737
PUT
DELISTED
Energy Transfer Partners L.p.
ETP
| $319K | 0.02% |
851
-10
| -1% | -$393 |
|
738
PUT
Las Vegas Sands
LVS
$30B
| $318K | 0.02% |
1,929
-513
| -21% | -$26.4K |
|
739
CALL
Cigna
CI
$75.4B
| $317K | 0.02% |
452
+172
| +61% | +$22.5K |
|
740
CALL
Occidental Petroleum
OXY
$57.2B
| $317K | 0.02% |
3,053
+1,413
| +86% | +$106K |
|
|
ENDP
741
PUT
DELISTED
Endo International plc
ENDP
| $317K | 0.02% |
1,302
-1,342
| -51% | -$26.7K |
|
742
Opko Health
OPK
$891M
| $316K | 0.02% |
29,892
+5,856
| +24% | +$58.3K |
|
|
JOYY
743
PUT
JOYY Inc
JOYY
$3.65B
| $315K | 0.02% |
1,250
+430
| +52% | +$19.6K |
|
|
SYT
744
PUT
DELISTED
Syngenta Ag
SYT
| $315K | 0.02% |
+446
| New | +$36.8K |
|
|
745
PUT
Abercrombie & Fitch
ANF
$4.27B
| $314K | 0.02% |
1,678
+918
| +121% | +$17.7K |
|
746
PUT
Tronox
TROX
$1.06B
| $313K | 0.02% |
542
-2
| -0.4% | -$15 |
|
|
SEMI
747
DELISTED
SunEdison Semiconductor Limited
SEMI
| $313K | 0.02% |
27,558
+18,678
| +210% | +$167K |
|
748
CALL
Autodesk
ADSK
$43B
| $312K | 0.02% |
574
+91
| +19% | +$5.73K |
|
749
Barclays
BCS
$94.8B
| $312K | 0.02% |
38,090
-52,428
| -58% | -$414K |
|
750
CALL
US Bancorp Series B Preferred Stock
USB.PRH
$747M
| $312K | 0.02% |
6,870
+1,758
| +34% | +$43.2K |
|
Similar funds
Simplex Trading's Q3 2016 Portfolio in Review
As of Q3 2016, Simplex Trading held 7,235 positions worth $1.48B, down 1.4% from $1.5B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading withdrew a net $87.1M in Q3 2016, closing 1,479 positions and reducing 1,939 holdings. Its most notable exit was SPDR Gold Trust, an estimated $38.3M position sold in full.
By sector, the portfolio is most concentrated in Communication Services at 8.4% of assets, up from 6.6% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Booking.com worth $15.6M.
- Simplex Trading's largest Q3 2016 buy was Booking.com: 264,225 shares worth $15.6M.
- Simplex Trading added most to Gilead Sciences in Q3 2016, an estimated $17.3M increase.
- Simplex Trading's biggest Q3 2016 reduction was LinkedIn Corporation, cutting an estimated $15.2M.
- Simplex Trading fully exited SPDR Gold Trust in Q3 2016, selling an estimated $38.3M.
- Simplex Trading's ten largest holdings make up 18% of its $1.48B portfolio in Q3 2016.
- Simplex Trading opened 1,460 new positions and closed 1,479 in Q3 2016.
- Simplex Trading's portfolio value fell 1.4% quarter-over-quarter to $1.48B.
Based on Simplex Trading's 13F filing for Q3 2016, filed 7 Oct 2016.